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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
primer pocket blow out.???
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<blockquote data-quote="Bob Wright" data-source="post: 1397829" data-attributes="member: 104363"><p>That's why I spilled my guts on this forum at the risk I would get "tough" comments.</p><p>Here is what I know:</p><p>-The primer pocket uniformer tool was cutting .005 over max SAAMI spec for depth.</p><p>-The Powder scale is back to the factory for re-calibration after I found .8 grain variation in remaining loads I pulled.</p><p>-Brass was yielding in the primer pockets and out of limits after 3 reloads. Realize that I just inspected 50 brand new Nosler rounds, and these are only .001 under the max. Not much room for multiple reloads.</p><p>-There were no pressure signs in 100 rounds previous (but yet, here we are.)</p><p>-Below maximum SAAMI cup pressure for speed and bullet weight</p><p>-Head spacing still at .001</p><p>-No bolt face damage or powder burns</p><p>-Escaping gas blew the cartridge back into the chamber .050, then expanding the cartridge head diameter the same.</p><p>-Loose primers "may have" caused primer damage. Ultimately, they failed under unusually higher pressure and hot gas and this, I believe, started the train wreck. All decapped Federal 215 primers previously shot on this day were without incident and appear normal. Same load.</p><p></p><p>I'm glad my Remington 700 took the hit, because my friends was a Mauser type design, not the 3 rings of steel of Remington. I have 7 out of 9 lives left. Will be taking the barrel off for a muzzle break any way, so a full chamber inspection can be performed.</p><p>Hope this helps you understand I am doing my utmost to figure out this scary situation. I am not striving for "hot" loads, just accuracy and lethality at my capable distance.</p></blockquote><p></p>
[QUOTE="Bob Wright, post: 1397829, member: 104363"] That's why I spilled my guts on this forum at the risk I would get "tough" comments. Here is what I know: -The primer pocket uniformer tool was cutting .005 over max SAAMI spec for depth. -The Powder scale is back to the factory for re-calibration after I found .8 grain variation in remaining loads I pulled. -Brass was yielding in the primer pockets and out of limits after 3 reloads. Realize that I just inspected 50 brand new Nosler rounds, and these are only .001 under the max. Not much room for multiple reloads. -There were no pressure signs in 100 rounds previous (but yet, here we are.) -Below maximum SAAMI cup pressure for speed and bullet weight -Head spacing still at .001 -No bolt face damage or powder burns -Escaping gas blew the cartridge back into the chamber .050, then expanding the cartridge head diameter the same. -Loose primers "may have" caused primer damage. Ultimately, they failed under unusually higher pressure and hot gas and this, I believe, started the train wreck. All decapped Federal 215 primers previously shot on this day were without incident and appear normal. Same load. I'm glad my Remington 700 took the hit, because my friends was a Mauser type design, not the 3 rings of steel of Remington. I have 7 out of 9 lives left. Will be taking the barrel off for a muzzle break any way, so a full chamber inspection can be performed. Hope this helps you understand I am doing my utmost to figure out this scary situation. I am not striving for "hot" loads, just accuracy and lethality at my capable distance. [/QUOTE]
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primer pocket blow out.???
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