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bullet drop?????

 
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  #8  
Old 02-27-2010, 03:50 PM
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Join Date: May 2009
Posts: 26
Re: bullet drop?????

Man, this exterior balistics thing is coooooompilicated. I am down to one rifle now, a pre 64 mod 70 243. I do not own a chrony. My load for this rifle is 40.5 grs of 4350 under a 95 gr nos bal tip, CCI br primmer. In the past I have found the group that shot the best load for a particular rifle at 100 yrds, Then shot it at 50 100 150 200 250 300 350 and 400, noted the drops and went hunting. I am getting old now and I guess I was just trying to find a short cut. Maybe the old way is still the best since I still don't think I have a real good understanding of what ya'll are talking about. Thanks for all the help and if anyone else wants to chime in, I greatly appreciate it. Maybe it will finally get through this thick head.
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  #9  
Old 02-27-2010, 05:15 PM
Platinum Member
 
Join Date: May 2008
Location: South of Canada and North of Wyoming
Posts: 5,953
Re: bullet drop?????

If you want to know your drops without having a chrony the only thing you can really do is shoot them and measure them. With a 243 you're probably not going to be shooting big game much past 500 yds. If I was shooting a 243, I would sight it in (zero) at 200 yds, but that's just me.

Here are a couple of sites that talk about trajectory and have graphs that might help you.

Bullet Trajectory Facts

Topic of the Month

Here's an online calc you can play with to help you with your drops.

External Ballistics Calculator
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  #10  
Old 02-27-2010, 11:44 PM
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Join Date: Jan 2010
Location: utah
Posts: 366
Re: bullet drop?????

bullet flflight lists this load (approx 3100fps) with an optimum max point blank at 315 yrd 0
with a presumed scope height of 1.75"it will shoot 3.5 moa high at 100 (3.5 inches),2.72 moa (5" high) at 175, o at 315and 2.05 moa low (8.6 inches) at 400
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