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Rifles, Reloading, Optics, Equipment
Reloading
How much variation is there between powder lots?
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<blockquote data-quote="Bart B" data-source="post: 366944" data-attributes="member: 5302"><p>In wearing out several 30 caliber barrels with IMR powders of 4895, 4064 and 4350 plus some Varget, I've not seen any difference between lots. I'm sure there's a small difference in peak pressure and muzzle velocity, but accuracy up to 1000 yards never changed. I used the same charge weights as with previous lots and never noticed any difference. Same sight settings worked too.</p><p></p><p>Sierra Bullets doesn't work up loads when they change powder lots or test barrels for a given cartridge. They just meter the same charge weight used before and get excellent accuracy; probably better than anyone else shooting their bullets.</p></blockquote><p></p>
[QUOTE="Bart B, post: 366944, member: 5302"] In wearing out several 30 caliber barrels with IMR powders of 4895, 4064 and 4350 plus some Varget, I've not seen any difference between lots. I'm sure there's a small difference in peak pressure and muzzle velocity, but accuracy up to 1000 yards never changed. I used the same charge weights as with previous lots and never noticed any difference. Same sight settings worked too. Sierra Bullets doesn't work up loads when they change powder lots or test barrels for a given cartridge. They just meter the same charge weight used before and get excellent accuracy; probably better than anyone else shooting their bullets. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
How much variation is there between powder lots?
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