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Maybe too simple.....
OK, I'll reword the question...is there some kind of mathematical equation to compensate for 10" barrel length vs 16" ?!? I have a Howa 1500 and have tried an 8 twist 16" and a 7 twist 16" .....both have been Douglas barrels with all work being done by Douglas. That being said, none of Sierra's load data, or JD's has managed to give me anything better than a 2" group!! I am using new Winchester brass that I have resized w/Hornady dies to 1.35. For whatever reason, I can't get the darn thing to group for crap!!!! I have tried H 110 , 296, N110, R 7, AA 5....different bullet weights- from 125's to 220's...just can't seem to "dail" them in !
I am just curious to know if the load data is incorrect because of my barrel being a different length?!? SURELY one of you guy's have felt my pain!! I read about you saying you are getting .5 moa groups with all different loads and bullet weights , and a snuff can cannot cover mine!! Trying to seek some knowledge here!!! Any info will be GREATLY appreciated!!
THANKS!
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