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Temp sensitive powder and fps ?

 
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  #22  
Old 12-23-2013, 10:36 AM
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Location: Meridian, Idaho
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Re: Temp sensitive powder and fps ?

MOA on the brain. My new turrets are IPHY not MOA and I didn't switch it. Doh.

While out wolf hunting yesterday I tested the 204. My chrono was showing an average of 3780 and I used to the factory BC. Out to 450 the solution with IPHY and bullet strikes were lining up very well. For giggles I took a shot at 880. The bullet was low 2 feet and left 10". I am still testing loads and playing with some extreme powders for temp stability but next time out I will take some more ammo and test from 500 to 800 and see how it goes.
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  #23  
Old 12-23-2013, 10:18 PM
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Re: Temp sensitive powder and fps ?

BrentM

IPHY does not compute. Explain to the slow guy please!

KB
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  #24  
Old 12-23-2013, 10:53 PM
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Location: The rifle range, or archery range or behind the computer in Alaska
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Re: Temp sensitive powder and fps ?

Quote:
Originally Posted by Kennibear View Post
P.S.

Am I the only one that thinks 0.36 fps/ degree is an incredibly good number???

KB
IMHO that is very acceptable. Not all loads will work well with extreme powders. Not all load dynamics will show the same results as what you see on Hodgdon's website either. I use RL powders often with great results and minimal extreme temp spreads.
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  #25  
Old 12-24-2013, 12:28 AM
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Re: Temp sensitive powder and fps ?

My computer was set to moa but the turrets are 1/4 inch not .25 moa.

I think I am close now. Fine tune and shoot. : )
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  #26  
Old 12-26-2013, 12:55 AM
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Re: Temp sensitive powder and fps ?

Played with benchmark and h4198. Got best results with 4198. 3780 with less than 10 ES. Accuracy was good at .25 @ 100.
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