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<blockquote data-quote="elkaholic" data-source="post: 305846" data-attributes="member: 13833"><p>I noticed a couple of things that haven't been mentioned. Besides the fouling raising pressures, there are at least two other things that will make quite a difference in firing a string, especially in in light barrel. As the barrel heats up, the bore constricts slightly which increases pressure. Even more dramatic, which you can prove with your crono is heating the powder inside your case after it is chambered. The longer you aim, the more the pressure increases in a warm (hot) barrel. Some studies show as much or more as 1 1/2 fps for every degree in temp increase. Hope this helps. God bless.......Rich</p></blockquote><p></p>
[QUOTE="elkaholic, post: 305846, member: 13833"] I noticed a couple of things that haven't been mentioned. Besides the fouling raising pressures, there are at least two other things that will make quite a difference in firing a string, especially in in light barrel. As the barrel heats up, the bore constricts slightly which increases pressure. Even more dramatic, which you can prove with your crono is heating the powder inside your case after it is chambered. The longer you aim, the more the pressure increases in a warm (hot) barrel. Some studies show as much or more as 1 1/2 fps for every degree in temp increase. Hope this helps. God bless.......Rich [/QUOTE]
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