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Long Range Hunting & Shooting
temps vs zero
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<blockquote data-quote="Pdvdh" data-source="post: 341143" data-attributes="member: 4191"><p>I would guess because he's trying to troubleshoot his rifle. Also, he may not be so much interested in knowing how his rifle will group a 5 or 10 shot string as the barrel heats up, as he is in knowing where his first shots from his hunting rifle hit with a cool barrel on the first shots. Ideally a gun wouldn't move point of impact from cool barrel to a heated barrel. But the thinner tubed versions often do start to enlarge the groups as they heat up. So I also cool my gun barrel down in the effort to learn how well the gun will group with a developed load with a cool barrel, rather than a barrel that starts out cool and ends up at 100F. In fact when there's snow outside I'll grab a handful and run it along the outside of the barrel from the forend on out to the muzzle to reduce the length of time I'm twittling my thumbs waiting for the barrel to cool down.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 341143, member: 4191"] I would guess because he's trying to troubleshoot his rifle. Also, he may not be so much interested in knowing how his rifle will group a 5 or 10 shot string as the barrel heats up, as he is in knowing where his first shots from his hunting rifle hit with a cool barrel on the first shots. Ideally a gun wouldn't move point of impact from cool barrel to a heated barrel. But the thinner tubed versions often do start to enlarge the groups as they heat up. So I also cool my gun barrel down in the effort to learn how well the gun will group with a developed load with a cool barrel, rather than a barrel that starts out cool and ends up at 100F. In fact when there's snow outside I'll grab a handful and run it along the outside of the barrel from the forend on out to the muzzle to reduce the length of time I'm twittling my thumbs waiting for the barrel to cool down. [/QUOTE]
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