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Rifles, Reloading, Optics, Equipment
Reloading
Possible Pressure Signs with factory Loaded Ammo?
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<blockquote data-quote="mhamlin" data-source="post: 1077604" data-attributes="member: 68822"><p>Bb, I had a local smith install a muzzle brake and he said the chamber was too rough, so he polished it while he had the barrel off. I cleaned the barrel well, before firing it the first time and between the first ten shots, but I didn't make any attempt to clean the chamber, so there may have been some oil present. The factory ammo was Remington and it had Remington primers; the primers looked similar to the Federals with a definite volcano rim ( I'll post a picture of one). I need to clarify one of my first statements: The first factory round fired had some bolt lift resistance, the second had resistance but it was less, and so on...my smith oiled the cocking cam and greased the lugs in my presence and made the point to keep those areas lubed.[ATTACH]47402[/ATTACH]</p><p></p><p>[ATTACH]47403[/ATTACH]</p><p></p><p>[ATTACH]47404[/ATTACH]</p><p></p><p>Bill, I will post a pic of a fired factory primer that is typical, unfortunately I had already sized and de-primed the cases. the pic is of a federal light starting load and a Rem factory round.</p><p></p><p>Bruce & Bill, I don't have a micrometer, yet...but I checked an unfired round at the case head with my calipers and it measured .545. A fired factory round case head measured .550, after full-length resizing. Although not accurate that seems outrageously excessive, based on what you've posted...?</p><p></p><p>CB, I'll check headspace to see what that tells me. Wouldn't the smith need to check headspacing when he remounted the barrel?</p><p></p><p>Mike</p></blockquote><p></p>
[QUOTE="mhamlin, post: 1077604, member: 68822"] Bb, I had a local smith install a muzzle brake and he said the chamber was too rough, so he polished it while he had the barrel off. I cleaned the barrel well, before firing it the first time and between the first ten shots, but I didn't make any attempt to clean the chamber, so there may have been some oil present. The factory ammo was Remington and it had Remington primers; the primers looked similar to the Federals with a definite volcano rim ( I'll post a picture of one). I need to clarify one of my first statements: The first factory round fired had some bolt lift resistance, the second had resistance but it was less, and so on...my smith oiled the cocking cam and greased the lugs in my presence and made the point to keep those areas lubed.[ATTACH]47402.vB[/ATTACH] [ATTACH]47403.vB[/ATTACH] [ATTACH]47404.vB[/ATTACH] Bill, I will post a pic of a fired factory primer that is typical, unfortunately I had already sized and de-primed the cases. the pic is of a federal light starting load and a Rem factory round. Bruce & Bill, I don't have a micrometer, yet...but I checked an unfired round at the case head with my calipers and it measured .545. A fired factory round case head measured .550, after full-length resizing. Although not accurate that seems outrageously excessive, based on what you've posted...? CB, I'll check headspace to see what that tells me. Wouldn't the smith need to check headspacing when he remounted the barrel? Mike [/QUOTE]
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Reloading
Possible Pressure Signs with factory Loaded Ammo?
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