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Hunting
Long Range Hunting & Shooting
how much does sun heated loads affect pressure?
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<blockquote data-quote="bkondeff" data-source="post: 701378" data-attributes="member: 10444"><p>I shot very well yesterday including groups of 1.0" at 400(only 2 shots), 3.5"at 500, and 3.8" at 600 for 4 shots. I left my ammo in the sun on one of the 1200+ yard round trips to check targets and they went from 75deg to 101deg. Group went up to 5.5" and cases were sticky, when they had not been before. </p><p></p><p>Seems I have been fairly consistent with this gun and load at .6 to. 8moa from 200 to 600 this summer but when the temps rise groups can be up to 1.25moa. I don't feel its always me. </p><p></p><p>Seems to also cause POI change to.</p><p></p><p>So how much do you think over-heated ammo can affect groups and/or POI? PS This not a custom rifle, just an A-bolt with BOSS with an after market trigger and medalist stock.</p></blockquote><p></p>
[QUOTE="bkondeff, post: 701378, member: 10444"] I shot very well yesterday including groups of 1.0" at 400(only 2 shots), 3.5"at 500, and 3.8" at 600 for 4 shots. I left my ammo in the sun on one of the 1200+ yard round trips to check targets and they went from 75deg to 101deg. Group went up to 5.5" and cases were sticky, when they had not been before. Seems I have been fairly consistent with this gun and load at .6 to. 8moa from 200 to 600 this summer but when the temps rise groups can be up to 1.25moa. I don't feel its always me. Seems to also cause POI change to. So how much do you think over-heated ammo can affect groups and/or POI? PS This not a custom rifle, just an A-bolt with BOSS with an after market trigger and medalist stock. [/QUOTE]
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