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Rifles, Reloading, Optics, Equipment
Reloading
Goofy Chronograph Reading-1st shot
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<blockquote data-quote="auminer" data-source="post: 878311" data-attributes="member: 39099"><p>Hi Gents: I reload for a couple of different long range rifles and have observed that my loads increase in velocity after the first shot. The varience seems to be a 40-60 fps increase after the first shot is taken. The following shots vary only slightly (5-15 fps) in velocity. I wait a full 1-2 minutes between shots for measurements. Calibers I'm shooting are the 243AI, 7MM and 300WM all shooting in the 3000+ range. I have tried a different chronograph and seem to have the same results. The first shot that is slow is from a clean cold barrel. Should a person throw out the first shot for an average for the long range ballistic tables/ custom turret or leave it in. If you throw it out the first shot what about the cold barrel shot when hunting? Anyway i'd appreciate any thoughts you would have on my problem. Thanks Al</p></blockquote><p></p>
[QUOTE="auminer, post: 878311, member: 39099"] Hi Gents: I reload for a couple of different long range rifles and have observed that my loads increase in velocity after the first shot. The varience seems to be a 40-60 fps increase after the first shot is taken. The following shots vary only slightly (5-15 fps) in velocity. I wait a full 1-2 minutes between shots for measurements. Calibers I'm shooting are the 243AI, 7MM and 300WM all shooting in the 3000+ range. I have tried a different chronograph and seem to have the same results. The first shot that is slow is from a clean cold barrel. Should a person throw out the first shot for an average for the long range ballistic tables/ custom turret or leave it in. If you throw it out the first shot what about the cold barrel shot when hunting? Anyway i'd appreciate any thoughts you would have on my problem. Thanks Al [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Goofy Chronograph Reading-1st shot
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