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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Secondary Explosion Effect? Or.....?
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<blockquote data-quote="307WYO" data-source="post: 852632" data-attributes="member: 58848"><p>Any help, advice, or ideas would be greatly appreciated... So here's the details, I'm shooting a 7mm ultra mag. I shot a 0.5" group yesterday with 88 gr RL-25, one fired brass, federal 215M primer, and 140 gr nolser accubond. Went home and loaded another 5 rounds identical but with new remington brass. It resulted in big dents being left right in front of the case shoulder. There was burned powder on the outside of the case like gas entered between the chamber and the case. What I have read on this subject and thd secondary explosion effect leans towards the idea that the load is too light.... I then shot even a lighter load (87 gr) in a once fired case and everything was fine. Also tested it with the same load from the day before...... Long story short, the big dented cases were replicated 3 times, all with new brass. Anytime once fired brass was used, everything worked great. Could it be a bad batch of brass or is the once fired brass stronger and can withstand more? Any help would be great. Thanks everyone</p></blockquote><p></p>
[QUOTE="307WYO, post: 852632, member: 58848"] Any help, advice, or ideas would be greatly appreciated... So here's the details, I'm shooting a 7mm ultra mag. I shot a 0.5" group yesterday with 88 gr RL-25, one fired brass, federal 215M primer, and 140 gr nolser accubond. Went home and loaded another 5 rounds identical but with new remington brass. It resulted in big dents being left right in front of the case shoulder. There was burned powder on the outside of the case like gas entered between the chamber and the case. What I have read on this subject and thd secondary explosion effect leans towards the idea that the load is too light.... I then shot even a lighter load (87 gr) in a once fired case and everything was fine. Also tested it with the same load from the day before...... Long story short, the big dented cases were replicated 3 times, all with new brass. Anytime once fired brass was used, everything worked great. Could it be a bad batch of brass or is the once fired brass stronger and can withstand more? Any help would be great. Thanks everyone [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Secondary Explosion Effect? Or.....?
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