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Rifles, Reloading, Optics, Equipment
Reloading
Causes of OVERPRESSURE
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<blockquote data-quote="Pdyson" data-source="post: 2464255" data-attributes="member: 74061"><p>Signs of over pressure may be over annealed or soft brass. A few years back, I bought a new 28 Nosler Heritage rifle. I also bought a box of their match grade ammo, a set of Redding type S FL dies, and two 50-count boxes of premium Nosler brass.</p><p>After checking data on Noslers website, I took the new brass and loaded some accubond LR over 80 to 83grains of Retumbo to fire form brass and break in the barrel. I fired 80 and 80.3 but saw pressure signs at 80.6 (heavy bolt lift, shaving brass and Deep ejector marks. I went home and pulled 25 bullets. Re weighed my powder and found nothing wrong. So I loaded them again with imr 8133. Same thing! I went home and pulled bullets again. Velocity measurements were low both times. I suspected soft brass and confirmation came with a new box of Peterson brass. I was able to achieve full velocity without pressure signs. I should have sent the brass back to Nosler but I didn't, I threw over $200 worth of Nosler once and twice fired brass in the trash. I'll never trust them again.</p></blockquote><p></p>
[QUOTE="Pdyson, post: 2464255, member: 74061"] Signs of over pressure may be over annealed or soft brass. A few years back, I bought a new 28 Nosler Heritage rifle. I also bought a box of their match grade ammo, a set of Redding type S FL dies, and two 50-count boxes of premium Nosler brass. After checking data on Noslers website, I took the new brass and loaded some accubond LR over 80 to 83grains of Retumbo to fire form brass and break in the barrel. I fired 80 and 80.3 but saw pressure signs at 80.6 (heavy bolt lift, shaving brass and Deep ejector marks. I went home and pulled 25 bullets. Re weighed my powder and found nothing wrong. So I loaded them again with imr 8133. Same thing! I went home and pulled bullets again. Velocity measurements were low both times. I suspected soft brass and confirmation came with a new box of Peterson brass. I was able to achieve full velocity without pressure signs. I should have sent the brass back to Nosler but I didn’t, I threw over $200 worth of Nosler once and twice fired brass in the trash. I’ll never trust them again. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Causes of OVERPRESSURE
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