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Whats an acceptable group size for lrh?

 
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  #1  
Old 11-22-2009, 11:32 AM
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Whats an acceptable group size for lrh?

Whats an acceptable group size at 100 yards for long range shooting?

I am getting just a touch under 1" for my 30-378 wby shooting 190 bergers.

Will this be ok for 750 yard shots?

Thanks
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Old 11-22-2009, 11:34 AM
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Re: Whats an acceptable group size for lrh?

First, you better practice lots at that range if your gonna ethically take game that far...

your rough 1 moa equals 7.5 to 8 inch group at that range...

depends on your intended game weather or not that is gonna work.

Elk for the most part yes...

coyotes and such, No...

Oh, have you seen what they group at 200 yards ?? takes the Bergers a little to settle in..
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Old 11-22-2009, 12:31 PM
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Re: Whats an acceptable group size for lrh?

I don't buy that 1 m.o.a. at 100 yards always equals 1 m.o.a. at 700 or 800 yards (or even 300 or 400 yards). Little things that don't make much difference at 100 yards begin to add up when you stretch the distance.

How consistent is your velocity? How good is the bullet? .30-.378 kicks a lot; is recoil an issue? How consistent is your cheek weld? Is your trigger pull straight back? Are you settling in on the bags the same each time (or applying the same pressure to a bipod)? Any runout in your bullets?

The above factors are pretty forgiving at 100 yards. They start to make a difference as you shoot farther out. And this all assumes there's no significant wind.

I'm not trying to bust your chops or bring you down or anything. Just wanted to get across if your intent is to shoot game at 750 yards, don't worry or get fired up over what your rifle's doing at 100 yards. Concern yourself with what it's doing at 750.
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Old 11-22-2009, 12:42 PM
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Re: Whats an acceptable group size for lrh?

You need to find a place suitable to shoot 750 yards and try it out if you intend to hunt at those ranges. That should be your deciding factor. Once you pass 400 yards I wouldn't shoot at game at more than what I have practiced at.

I would say you should be more in the 0.5 MOA range from 100-300 yards before going for any game at long range. At least try them at 300 yards and see what kind of groups you get there.
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Old 11-22-2009, 02:00 PM
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Re: Whats an acceptable group size for lrh?

I start at 100yards, then if a load seems promising (well under moa) I move out further, but the load needs to be chronoed. I used to just try to get my groups to 1/2moa or better at 100 but after shooting over a chrono and seeing up to 40fps variance in my load my eyes were opened quite a bit. At 1000yards my groups seemed to have a lot of verticle stringing...as to be expected. I learned that tight groups up close are only half the eqaution. Your load needs to be as accurate and consistant as possible.
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Old 11-22-2009, 02:15 PM
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Re: Whats an acceptable group size for lrh?

A load that is bad at 100yds is, for the most part, going to be bad at long range (some argue the whole stabilization thing but if I encountered that I think I'd still be nervous). All a 100yd group tells you is whether it is worth investigating at long range. You can never shoot at 100yds at assume you're good at extended ranges.

My elk rifle is good to about 900 yds on elk though I could get a mile out of it on targets. I shot it various distances out to 900 yds before I ever took it afield.
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Old 11-22-2009, 03:03 PM
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Re: Whats an acceptable group size for lrh?

Quote:
Originally Posted by WEATHERBY460 View Post
Whats an acceptable group size at 100 yards for long range shooting?

I am getting just a touch under 1" for my 30-378 wby shooting 190 bergers.

Will this be ok for 750 yard shots?

Thanks


Everyone seems to get hung up on group size when talking about long range hunting. In my opinion group size only comes into play when tuning the rifle and load and ones skills. Once you have that the important thing is can you hit what you shoot at? Using your number 750 yards can you with a cold barrel shoot cross canyon and put the bullet into a 10 inch kill zone on a elk with the first shot. There are a kazillion variables that influence that shot.

You see nice groups all the time. The problem lies in that the groups are not at point of aim. If you can shoot a 1 inch group or less at 100 yards and the group is surrounding where you aimed then in my opinion you and the rifle are ready to stretch it out and find your limit and the quality of the load your using.
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