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same weight/ same POI ?

 
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  #22  
Old 03-09-2012, 07:34 PM
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Re: same weight/ same POI ?

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Originally Posted by Mada View Post
May I ask why the your charge weight is different? Is it just because. Or velocity issues. Or whatever the case may be..
Whenever I change a component to a load, I'll preform another ladder test. In that instance, I found the FMJ load to be most accurate with an increase in charge weight.
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  #23  
Old 03-09-2012, 10:38 PM
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Re: same weight/ same POI ?

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Originally Posted by justgoto View Post
Whenever I change a component to a load, I'll preform another ladder test. In that instance, I found the FMJ load to be most accurate with an increase in charge weight.
This is the type of qualifier I was talking about. In my experience changing bullets changes tune, and justgoto is taking the right action here. Without this, POI would change in my guns if I picked from multi-bullet selections in the field.
Maybe I'm missing the context of this question though.
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  #24  
Old 03-10-2012, 01:43 AM
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Re: same weight/ same POI ?

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Originally Posted by justgoto View Post
I shoot a Hornady 150gr FMJ and a Hornady 150gr SST in the same rifle. The charge weight is .5grains different, the BC is .017 different; the POI difference is less than moa at 400 yards.

So I practice with the FMJs that are 2/3s the price of the SSTs.
That's not much of a difference to ever worry about, but when you start to look at a .1 or larger difference it starts to show up fast. I personally would not worry about .05 or even .075 in the B/C, but I try to keep my shots under 600 yards.
gary
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  #25  
Old 03-10-2012, 01:45 AM
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Re: same weight/ same POI ?

Quote:
Originally Posted by Mikecr View Post
This is the type of qualifier I was talking about. In my experience changing bullets changes tune, and justgoto is taking the right action here. Without this, POI would change in my guns if I picked from multi-bullet selections in the field.
Maybe I'm missing the context of this question though.
exactly! Compair a 200 grain flat based bullet to a 200 grain boat tail at 350 yards in a 30 caliber like a .300 mag.
gary
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