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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 Win Mag custom rifle charlie foxtrot
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<blockquote data-quote="Lefty7mmstw" data-source="post: 1000914" data-attributes="member: 48043"><p>Sounds like the powder you are using may not be burning uniformly at all temperatures and conditions. </p><p>I had a 7rem a couple of years ago doing just that with 7828 and 140 sierra's. 1/2 moa at times (usually hot out) and not only would the velocity fall off but the accuracy would fall to 2 moa when it was even a bit cooler out. I'd switch powders first and give her plenty of ignition (if you aren't already) with a mag primer to see if she sorts out. With my 7rem I switched to rl22 for full throttle loads and went up to 4064 for mild plinking stuff and she sorted out.</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 1000914, member: 48043"] Sounds like the powder you are using may not be burning uniformly at all temperatures and conditions. I had a 7rem a couple of years ago doing just that with 7828 and 140 sierra's. 1/2 moa at times (usually hot out) and not only would the velocity fall off but the accuracy would fall to 2 moa when it was even a bit cooler out. I'd switch powders first and give her plenty of ignition (if you aren't already) with a mag primer to see if she sorts out. With my 7rem I switched to rl22 for full throttle loads and went up to 4064 for mild plinking stuff and she sorted out. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 Win Mag custom rifle charlie foxtrot
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