T.R | Title | User | Personal Name | Date | Lines |
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186.1 | can relate... | BTO::REMILLARD_K | | Fri Jul 22 1988 12:22 | 59 |
|
Steve,
Thanks for the good info., and reading. I can relate to a lot of
the "inexperience" problems that you talk about. I know I have
a lot of them. I don't shoot that often, never seem to have the
time, until November. I killed the first deer I ever shot at with
my rifle, but on the 3rd shot, I was lucky. This past season I
wasn't so lucky, missed a big 7 pt. 207# buck. I am sure I hit
him, but not very good. I only know his size and rack from someone
that talked to the guy that found him. I learned a lot from that
experience. I will try and jog my memory...
It was opening morning last season, still hunting up the side of
a mountain, 300 yards from the top...very steep. I was taking my
time, 2-3 steps every 5-10 minutes...when crunch, snap...crack.
Here he is, I knew it was a buck immediately, could spot the antlers,
but didn't even bother counting or gazing at them. I waited until
he came around a stump...at about 35 yards. He was uphill to me,
standing slightly downhill...looking right at me. Safety was off,
crosshairs were on the base of his neck..when he took two steps
and exposed his side...I couldn't miss the flexing shoulder muscle
in my scope...which was on 4X. I moved from the neck to about 2"
behind the front shoulder and squeezed...BANG. His downhill leg
(front) let loose and he fell, but let me tell you he didn't give
me a second chance. I shot again as he cleared a 7' blowdown...only
to put it into the tree. He ran about 50 yds., and stopped behind
some trees...tail tucked right up under his ass. I looked at the
watch...said give him 5 minutes to die and get ready to celebrate.
Well suddenly I couldn't see him any more...I thought he was done
with. I circled low and came to where he was standing to see
absolutely nothing. Well not having much experience I sort of paniced.
Couldn't pick his track from the many others in the leaves, so I
started looking for his carcass...which I never found.
My point is, from what I can remember, my best shot was the base
of the neck when we was looking down at me, high percentage. As
soon as he turned any mistake from me could mean a very low percentage,
ponch shot etc....I didn't find any blood, but did find very few
short brown hairs that had been cut. It turns out someone claims
they shot a big buck on the back side of the mountain, about 500
yards away...in a stream the next day. I was on that mountain all
the next day never to hear a shot...so I believe the found him dead.
I do not want to write another story like this next year. I will
start practicing very soon. And maybe buy a new gun...I haven't
exactly been satisfied with my present rifle. It is a Rem. Model
7600, .270 pump. I am not a good shot with it, although I believe
it may be me more than the gun. The guy who sold it to me shot
it after I complained about it, and put a group of 5 within a few
inches of each other at 200 yards. I shot it right after that with
the same ammo and probably put them within a 6" group. He has a
lot of shooting experience. I believe I have some of the problems
listed above...I guess it's practice, practice, and more practice,
and them make a decision about the gun.
thanks,
Kevin
|
186.2 | | SALEM::PAPPALARDO | | Fri Jul 22 1988 14:19 | 36 |
| .0 Has a good point in his note around praticing, but that is
what most peoples problems come from the lack of thinking ahead
of time and sometimes i'm no exception either. Most people don't
even consider going out to practice because its to hot or just about
any other excuse they can find not to do it. This also holds true
to the point of buying guns, calibers,models,and most important
prices deplete and go up as the season comes with the crisp cool
air.
.1 I know how you feel about not getting the deer, I went through
the exact same thing last season. As you talked about your experience
I was invisioning mine and almost right down to the same details.
In my case and yours through I really acredit the loss to angles
more than accuracy. I was on a stand and watched the 2 deer come
for a good 75 yards, but always in my mind what myself and my brothers
were taught "Make a Good Clean Shot" in other words "WAIT". And
thats exactly what I did. The first avaiable shot was to the neck
but I held it back waiting for the shoulder which always seems like
hours. One thing I really didn't figure in shot placement this time
was the downward angle (believe i'll never forget again), I fired
and the deer screwed with its tail in the air. I stood up to see
the direction it was going, once that was in my mind I went to where
it was standing. There was a mixture of white & brown hair along
with flesh but no blood. I then headed toward the direction of the
deers departure. I saw it leeping through the hardwoods but couldn't
get another shot. But to end the story we looked for 2 days for
this deer only to find a good blood trail that ended and into a
20+ acre clear cut witout being able to find the deer. I both .1
reply and my own story you see how angles play a big part also.
A lesson learned,
Guy
_
(+)
-
|
186.3 | What do you use????? | FLYSQD::NIEMI | Buy 'em all | Fri Jul 22 1988 14:30 | 9 |
| .0
What kind of rifle and loads do you use for the Hi Power competition.
I did a little a couple of years ago with a M1 Garrand which I borrowed
from a friend to shoot in a couple of leg matches. The very first
match at six hunderd yards my front sight fell off the gun. I borrowed
an allen wrench to put it back on with but did lousy. This kind
of thing can really shake you up........
sjn
|
186.4 | Can't totally agree with one point | DECWET::HELSEL | Well....isn't that special? | Fri Jul 22 1988 17:55 | 68 |
| Sorry Steve,
While I appreciate *most* of what you are saying, I can't buy the
following:
>Anyway back to the subject at hand. There are articles in this note
>file pertaining to the caliber and load the respective authors prefer for
>hunting. All I can say is that most any load is the right one if the projectile
>is properly placed on the intended target. Although my choice for most north
>American big game would be the 308. I know its' trajectory like the back of
>my hand and if properly placed the bullet will take most any game animal.
But I am glad you picked the .308 for an example.
I intend to hunt Pronghorn in Montana, which will likely require
a 300 yard shot to a 80-100 lbs. beast.
I will hunt Blacktail/Mulie in Washington. A shot of 50-200 yards is
reasonable.
I will also hunt Elk in Washington. The 50-200 yard range probably
applies.
Now, which weight bullet should I use in my .308? Remember, you
said that almost any load would do.
I disagree. The optimum load (according to most books you read)
for hunting Antelope is a light bullet (130 gr.) in .270 caliber.
This will give you a nice flat flight for 300 yards and a fair amount
of momentum. Now, for a .308, I would love to use a 130 gr bullet
but no one makes one (other than a FP and a HP). I don't want to
use a heavy bullet for two reasons. 1) the trajectory stinks at
that range. 2) I like the taste of Antelope and I'd like to be
able to find something other than a rack in the dust.
I've decided to use a 150 grain bullet (rather go up than down to
110 gr). I'll need to put some powder in there to move it and keep
the trajectory as flat as possible.
This load would probably cut it for a deer, although 165 gr. would
be my optimum load. You probably want more than a 150 gr for a
mulie. I'll bet that 180 gr is most popular for Mule Deer.
For an Elk, I think a 150 gr bullet is irresponsible. You chance
injury without a kill. I am planning on using a 180 gr bullet.
So, the 180 grain bullet is far too heavy to shoot 300 yards at
a tiny little antelope. On the other hand, 150 grain bullets
are too light for Elk. I don't have .308 trajectories here
at work, but they there will be a big difference. For one thing,
that 180 gr is not moving nearly as fast as that 150 gr.
And so on and so on and so on.
I agree with most of the rest of what you say. The interesting
thing is about iron sights. I have a .308 that I didn't have a
scope for for about 11 months. I wanted to hunt with it so I
took it out to shoot with iron sights. Gosh, was I surprised
how accurate I was at 100 yards with no scope. Almost as good
as with a scope!!!
Last point. About focusing in on the iron sights instead of the
target. The interesting thing here is that this is the opposite
of shotgunning. With a shotgun, you swing the gun and focus on
the target (pheasant, clay, duck) and not at the bead.
Brett.
|
186.5 | some answers 1 | WFOV12::DRUMM | | Fri Jul 22 1988 21:28 | 22 |
| OK !! looks like I have some readers out there.
I'll answer all the question I can before I go on Vacation and
the rest after I get back.
.3 I started with a M1. It didn't take long before I could out
shoot the gun so I built my own M1A1 (civilian version of the M14).
I put a Douglas heavy match barrell 1:12 twist on a springfield
reveiver. Bedded the thing in a heavy grade match stock. The gun
is holding less than a minute accuracy right now but the barrel
wil need replacing this comiming spring, I think, 5000 + rounds
through it now and another 1000 to go this year alone.
.4 I agree not any load is good for any job. I'll have an answer
for you next week. But my prelim is use Nosler 180gr protected point
partitioned bullet. It won't turn antilope into dust and will take
Elk when PROPERLY placed. I'll have full ballistic table for you
in my next reply. I think you'll be suprised how flat that little
pill will fly.
Steve. :^) 9 more days till the nationals, and two weeks of
shooting!! :^) :^) :^)
|
186.6 | By a longshot | DECWET::HELSEL | Well....isn't that special? | Mon Jul 25 1988 14:38 | 49 |
| rep: .5
> .4 I agree not any load is good for any job. I'll have an answer
>for you next week. But my prelim is use Nosler 180gr protected point
>partitioned bullet. It won't turn antilope into dust and will take
>Elk when PROPERLY placed. I'll have full ballistic table for you
>in my next reply. I think you'll be suprised how flat that little
>pill will fly.
Of course, I'd be interested to learn anything about the subject,
but it so happens that I am loading Nosler Partition Bullets; 180
grainers for Elk and 150 grainers for Antelope. I sight in with
Sierra bullets of the same weight. Then before I go hunting, I
load up the Noslers and fine tune the scopes for the bullet.
I've thought about your remarks this weekend. I agree that one
should shoot more than just 5 rounds to sight in the gun the weekend
before a given season. I have been shooting a *lot* this year.
In fact, my trap shooting is suffering. The reason is that I have
never taken 300+ yard shots in hunting situations before. I'm really
looking forward to this opportunity.
This weekend I was visiting my dog who is at a trainer's near Yakima,
WA. The terrain out there is sort of rolling hills. It is very
hot and desert like this time of the year....much like Northern
CA East of the mountains. We were working my dog and in the distance
was a Coyote. He comes down to steal Chukars from the trainer.
The Coyote was about 300-400 yards off. Of course we didn't have
a rifle. The trainer wanted to shoot him and I was wishing I had
my .308 or .300 WM so bad......... All I could think of was "I
wonder if I could hit that sucker from here?"
I was sure I could, but I guess I'll never know. Least not till
pronghorn season.
The other thing I was thinking about is handloading vs. factory.
Maybe you are right that any factory load would do the job. I mean
you can buy a wide variety of calibers/weights. However, there
is the "fun" factor. I enjoy loading and getting a nice group.
It gives me a lot better feeling about hunting with my own loads.
Not that mine are better than factories....it just floats my boat.
I would enter more of my loads in the "loading notes", but I have
been perfecting them throughout the summer. Then again, maybe the
loads aren't improving as much as I am from shooting a lot.
;-)
Brett.
|
186.7 | Great Info | PCCAD1::RICHARDJ | Bluegrass,Music Aged to Perfection | Wed Jul 27 1988 09:32 | 21 |
| re:0
Just read it, its good. I don't compete, but I was an expert in
the USMC. One thing that you didn't mention that is valuable in
sighting, is that you place the front sight blade at 6 o'clock
on the bullseye. Many people try to hold the sight in the center
of the target when aimimg, which causes an inconsistent patern.
The target and rear sight should be fuzzy while the front blade
is clear and kissing the target at 6 o'clock.
I use to be a bowman, and people always were talking about the
poundage they should have for deer and I guess the same thing
happens in the gun world. There seems to be an attitude "I need
power to knock em down". A big deer is only 12" to 18" wide,
in the northeast on average, most bows of 40lbs will put an arrow
completely through a deer, and a rifle of 30-30 caliber is more
than enough for deer. I'm in the agreement of, accuracy is more
important than power. In New England most deer are taken within
30yards, so even a 12guage shotgun is good, in Massachusetts only
shotguns are allowed.
Jim
|
186.8 | some answers/ trajectories | WFOV12::DRUMM | | Wed Jul 27 1988 23:49 | 118 |
| re: .3 sorry I forgot to tell you the load I am using.
I load 41.5 grains of Accurate 2460 powder to push a 180 grain
Hollow Point Boat Tail Match King bullet. I get 2450 fps at
the muzzle. It shoots real good out of that gas pipe of mine.
re: .4, .6
Brett, glad to see you are out there on the practice range.
you are right!! you are getting better!
Before I enter the trajectory tables I promised I have
a caution about your practice. You said you are using one type
of projectile of the same weight for practice and a different one
for the real hunt. That's OK if you remember that even though the
projectile is the same weight it may have a different trajectory.
That is, it will have different mid-range and longer than sighted
range rise and drop. It's OK to use different bullet types of
the same weight but be sure they have the same ballistic coefficient
or close there abouts. When you practice don't just shoot at the
sighted in distance, shoot at targets at mid-ranges and 50-100 yards
beyond the sighted in distance. This will help you really learn just
what your load is doing and allow you to make that all important
perfect hit.
One more item then the tables. It has been noted, and I through
experience can state, that the trajectory of the gun/load you shoot will
change with a change in Altitude and Temp, etc. I have found that my 308
will have a change of 1 degree of angle for each 15-20 degree change
in temp. What that says is, if you sight your rifle in on a 90 degree
day and then hunt on a 30 degree day the bullet "may" hit as much as
12 inches lower at 300 yards than when you sighted it in, and the Big
Buck is waving good by. So if you can, when you are at your base camp
ask the guide, if you use one, or find a spot where you won't spook
local game and take a few sighting shoots to check and fine tune your
gun to the local conditions.
You said in .6 you were using 150 gr and 180 gr grand slams. I only
have tables for the 150 gr. Grand Slam. I am giving you a table which is
very close to the 180 gr Grand Slam. I don't know your load so I am giving
you the trajectory for each at several muzzle velocities. Also these
tables are for the gun sighted in at 300 yards. If you don't have 300 yards
to shoot from let me know what distance you have and I will send you
Via; Email the tables for that range. The -1.5 for 0.0 yards is due to
the height if the sights above the bore.
Trajectory taken at: 29.5 Barometric Pressure
59 Degrees F.
78% Relative Humidity
Remember Trajectories WILL differ under different weather conditions.
150gr Grand Slam, Ballistic coefficient =.370
Muzzle |------------ yards ---------------|
Velocity 0.0 100 200 300 400
-------------------------------------------
3500 -1.5 2.6 3.3 0.0 -8.2
3400 -1.5 2.8 3.6 0.0 -8.7
3300 -1.5 3.1 3.8 0.0 -9.3
3200 -1.5 3.3 4.1 0.0 -10.0
3100 -1.5 3.6 4.4 0.0 -10.8
3000 -1.5 4.0 4.8 0.0 -11.6
2900 -1.5 4.3 5.2 0.0 -12.5
2800 -1.5 4.7 5.6 0.0 -13.6
2700 -1.5 5.2 6.1 0.0 -14.8
2600 -1.5 5.7 6.7 0.0 -16.1
2500 -1.5 6.3 7.3 0.0 -17.6
2400 -1.5 7.0 8.0 0.0 -19.3
2300 -1.5 7.7 8.9 0.0 -21.3
2200 -1.5 8.6 9.8 0.0 -23.5
2100 -1.5 9.6 10.9 0.0 -26.1
180 gr Spitzer/Protected Point
Ballistic coefficient =.420
Muzzle |------------ yards ---------------|
Velocity 0.0 100 200 300 400
-------------------------------------------
3400 -1.5 2.7 3.4 0.0 -8.2
3300 -1.5 2.9 3.7 0.0 -9.3
3200 -1.5 3.2 3.9 0.0 -9.4
3100 -1.5 3.5 4.2 0.0 -10.1
3000 -1.5 3.8 4.6 0.0 -10.9
2900 -1.5 4.2 5.0 0.0 -11.8
2800 -1.5 4.6 5.4 0.0 -12.8
2700 -1.5 5.0 5.8 0.0 -13.9
2600 -1.5 5.5 6.4 0.0 -15.1
2500 -1.5 6.1 7.0 0.0 -16.5
2400 -1.5 6.7 7.7 0.0 -18.1
2300 -1.5 7.4 8.4 0.0 -19.9
2200 -1.5 8.2 9.3 0.0 -22.0
2100 -1.5 9.2 10.4 0.0 -24.4
If you look close at the tables you can see the trajectories at
mid velocities are about the same for both bullets. What this tells me
is I would pick the 180 grain and stick with it for the whole hunt.
It will give you the same trajectory but with better performance when
it begins its' business. That's knock down power.
The extra 30 grains won't blow your antelope apart but will give
you what you need on the elk. AND you only have to learn one set of
trajectory for the entire hunt.
I hope this helps you and good shooting on the hunt.
Steve :*)
only two days till the nationals and two weeks of shooting!!
:*) :*) :*) :*)
|
186.9 | Six O'clock Hold | WFOV12::DRUMM | | Wed Jul 27 1988 23:54 | 20 |
|
re: .7
This is a good point! I however use point of impact hold
for all hunting here in New England. Ranges are close enough to use it.
When I shoot long range, over 150 yards I do in fact use
the six O'clock hold. I sight the gun in to hit 10-12 (depends on bullet
trajectory) inches above sighting point on a 300 yard target. I can
then shoot holding the front sight with the leg of the animal running
along side the sight and the belly of the animal resting on top of the
sight. That puts the bullet in the boiler room every time out to 300
yards. for 350-400 yards I push the front sight into the middle of
the chest. Beyond that I don't shoot. If I had and used a scope I
would take shots beyond 400 yards but it starts to get risky with
iron sights. Also I rarely take shots on running game beyond 50 yards
here in New England and beyond 200 out west.
I have not been out west hunting for some 18 years, I would
love to start it again!!!
|
186.10 | What do the rest of you think? | DECWET::HELSEL | Well....isn't that special? | Wed Aug 03 1988 15:20 | 27 |
| RE: .8
Okay, I've given this a lot of thought. While you are correct in
that there is not a big difference in trajectory between the 150
gr and 180 gr bullets that you've sited, I just can't do it. I
think the reason that I can't bring myself to use a 180 gr bullet
for Antelope hunting is that it is just too big.
I really only want to use a 130 gr bullet. The 150 gr bullet is
already a tradeoff. There is a big differnce between what a 130
gr bullet and a 180 gr bullet will do inside of such a small animal.
At this point, I still am leaning toward building two loads, a 150
gr and a 180 gr. I can always use two different guns if I don't
think I will have adequate time to reload and sight in between hunts.
In fact, that may be a good idea to have a gun sighted in and ready
to gbo for each hunt. Then switch my favorite rifle from load to
load time permitting.
What are other opinions out there?
Would the rest of you use a 180 gr bullet for hunting smaller "big
game"?
I wanna know. Maybe I'm jaded by a lot of "old school" thought.
Brett.
|
186.11 | SOME MORE THOUGHT | WFOV11::DRUMM | | Fri Aug 19 1988 21:39 | 35 |
|
Hi folks, I'm back from the national matches. Did some of the things
I set out to do and missed some of the others. ;^) & :#(
I thought I was not shooting up to my potential at the six hundred
yard line the first week but found it was a broken gun causing the
problems. After I fixed it I and the gun shot like there was no
tomorrow.
RE: .10
Glad to see you gave a lot of thought to the subject Brett. I wish
some folks out in the land of the setting sun would respond
to your request. I hunted Antelope twice and used a 7MM-08 with
a 130 gr bullet on one occasion. Took them little BIG game just fine.
Also took one with a 180 gr bullet. Didn't see any big difference in
the damage done. Both were shot at about 200 yards just behind the
front shoulder and the bullet, on both occasions, passed through the
animal.
In a perfect bullet/animal combination the bullet would not pass
through the animal but stop just prior to exiting. This would mean the
bullet had expended all its' energy in the animal and none would be
wasted. This of course just doesn't happen all the time.
I can't give you the perfect combination. All I can do is what
I set out to do, get you thinking.
I am not of the old school so I would still use the 180gr for
the entire hunt. But this is a personal choice and nothing more!
If some of you Western hunters out there have more knowledge/experience
on the subject please respond. I like Brett would like to hear from you.
Steve Who_Had_Fun_At_The_Nationals :^)
|
186.12 | | CSC32::G_ROBERTS | | Tue Sep 06 1988 13:17 | 37 |
| Brett,
I have been hunting elk, deer, and antelope out here in Colorado
for 12 years now. I use a .270 with the same load for all three.
The bullet is 130 grain boat tail going about 2950 fps out of the
barrel. I hunt with this rifle and so does my wife when she goes
along. This load is considered light by some people for elk and
deer, but it has taken 8 elk and 12 deer with single shots. It
does alot of damage on antelope if it hits bone, but the deer and
elk have thicker hides and stronger bones and it does a fine job
of bringing them down. It has taken 12 or more antelope over the
years too.
As stated by several other noters, its the shot placement thats
important. I've seen guys shot all three of the above animals
several times with larger guns and bigger bullets and several times
the game still gets away. Nothing #is$es me off more than
knowing there is an animal out there dying and going to waste.
Sure bigger guns are more maucho, but you have to be able to control
it. I opt to use the one I do because it is easy to control and
confortable to shot, and I do shot a lot of rounds out of it before
season. The years that we draw an antelope tag, my friends and
I go out east and shot at a rolling target in a tire coming down
a grade. We also do alot of 200 - 300 yard practice. All but 1
of the deer and elk I've shot have been within 100 yards, and most
of them within 50 yards. So before deer and elk season I make sure
I'm dead on at 100 yards.
The point I'm trying to make is practice and get to know your rifle.
I hand load my ammo, so every round is +/- only a couple of grains,
physical pieces of powder, of each other. What a difference it
makes out at the range. When I pull the trigger I know my tools
and me are tuned. After that, the work starts. Good luck.
Gordon
|
186.13 | IT 'S ACCURACY THAT COUNTS | DPDMAI::HAMRICK | | Wed Oct 12 1988 16:14 | 31 |
| Hi folks,
Just read the note and thought I'd add my opinion. I'm now 40+ yeras
old and been hunting for about 35 of those. I've used all sorts
of rifles on all sorts of game. As with .4 I am an expert marksman
from USMC.
My personal preference (i've been using it for about 10 years now)
is a 25-06. Too small you say? Over the years I have taken antelope
out to 300 yds and elk and deer at all kinds of ranges.
I hand load my own using IMR 4350 powder, CCI 200 primers, and 120
gr. SIERRA spire point boat tails. If I can't cover my group at
250 yds with a coffee cup, then I probably did something wrong I
know the rifle can do it. BTW the rifle is a 1937 German Mauser
(8mm) that I had rebarreled (sp) in 1976 with a douglas medium weight.
I have to agree with the original statement that placement is more
important then power as all the deer I killed in my youth (5-10
yrs) were killed with a Winchester pump .22 that belonged to my
Grandfather.
The point I'm trying to make is LEARN TO SHOOT YOU RIFLE AND LOAD.
If you know what it will do it doesn't matter (to a point) what
that combination is as long as the bullet will go to a precise point
you pick on the target.
This is just my opinion,
Thanks for listening to a Texas Boy,
Harvey
|
186.14 | CORRECTION | DPDMAI::HAMRICK | | Wed Oct 12 1988 16:28 | 17 |
| MESSED UP AGAIN,
I intended to say .7 when I said .4 in previous note.
Also for those of you looking for consistency in placement, I bedded
my rifle in fiberglass. This is done with two beds, one under the
tang in front of the receiver and the other under the rear of the
receiver. The metal does not touch the wood of the stock anywhere
and two of my business cards will travel unobstructed between the
barrel and stock from tip to fiberglass bedding under receiver.
This eliminates some of the change in impact due to weather changes.
As I stated before these are just my opinions, I'm no authority
but I do have a lot of time behind the stock.
Harvey_FOR_WHAT_IT'S_WORTH
|
186.15 | variance in trajectory - shooting up/downhill? | COMET::ALBERTUS | if it feels nice, dont think twice | Tue Sep 26 1989 12:06 | 17 |
| Time to start this one up a bit again .... and if this has been
covered already, somebody steer me to the right note.
One of the replies in this topic mentioned that the bullet's
trajectory was off due to shooting up (or down) hill.
What affect and how much does shooting up/downhill?
If someone has tables showing the affect, I would appreciate
them posting them.
I've heard that shooting up (or down) hill causes the bullet
to shoot high.
So, for a 45 degree angle what's the scoop?
AA
|
186.16 | | CSC32::L_THOMAS | | Tue Sep 26 1989 14:12 | 14 |
| If you are shooting at a slant the distance (slant-range) will not be
the same as the range that is affected by gravity (horizontal range).
The formula is: 2 2 2
A + B = C where c= the longest side.
for a 400 yd (slant range) shot at a 45 degree angle, the distance that
gravity would influence the bullet path would be 282.84 yds. This means
that the bullet would only drop the amount it would normally drop for a
282 yd shot. You would be most likely holding for a 400 yd shot and
the bullet would go sailing over the top of the animal by several FEET.
Of course, a flatter trajectory would help deminish this problem.
Lowell
|
186.17 | Try Trig Tables | MAIL::HENSON | | Fri Sep 29 1989 18:31 | 14 |
|
I hate to get real technical, but if you can find some trig tables,
it's very easy to determine the horizontal distance. Just multiply
the total distance by the cosine of the angle. For instance, if
I remember correctly, the cosine of 45 degrees is .707. Therefore,
if you are shooting at a 45 degree incline (or decline, it doesn't
matter), and your target is 200 yards away, the bullet will actually
only travel 200 x .707 = 141.4 yards. Unfortunately, I never seem
to have a trig table, a way to measure the angle, or the time to
do it when the opportunity presents itself. I just hold a little
lower than normal when I shoot uphill or downhill.
Jerry
|
186.18 | | COMET::ALBERTUS | every kind of refuge has its price | Mon Oct 02 1989 11:35 | 47 |
| Thanks to those who replied. I was aware of the trig functions
involved but was curious as to how gravity would affect the
trajectory.
Ran some numbers through my calculator just for fun and here's
the results.
AA
variance in trajectory based on shooting
up/downhill at various angles
yds 100 200 300 400
-----------------------------------
< results in effective yardage
10 98 197 295 393
15 96 193 289 386
20 94 188 282 376
25 91 181 272 362
30 87 173 260 346
35 82 164 246 328
40 77 153 230 306
45 71 141 212 283
50 64 129 193 257
55 57 115 172 229
60 50 100 150 200
65 42 85 127 169
70 34 68 103 137
75 26 52 78 104
80 17 35 52 69
85 9 17 26 35
|