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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
My 308 has me baffled
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<blockquote data-quote="freddiej" data-source="post: 1772188" data-attributes="member: 26227"><p>From what you have said: here are my deductions on POI shift and your pressure signs. </p><p>first Cera-Kote adds to your dimensions, so if you have the action bedded to the stock your stock might be bending your barrel up slightly. that is one thing to check. </p><p>second, if the 'smith used a live center instead of a 4 jaw chuck to thread; your crown is AFU (all F-ed up) . I have had model 10 FP's 223 and 308 their crowns are target 90 Deg crowns and are easily ruined by certain machining processes so I would take a really close look at the crown, if it looks like it's had a 60 Degree cone shoved into it hard; get it recrowned. this could also be why you have pressure signs, the crown could be a bit of a choke at the end bringing your pressure up or the 'smith took some of your headspace away by giving you an even tighter chamber when he put the barrel back on. </p><p>In the past muzzle brakes have only helped any of the rifles I have added them to. your problem in my mind is not with the muzzle device. Experiment time; take it off and things go back to normal then we have problems with the muzzle device. </p><p>I have no experience with suppressors. I do know that they make an AR-15 need more maintenance, after that I have only shot some of my friend's cans on AR's and one bolt gun.</p></blockquote><p></p>
[QUOTE="freddiej, post: 1772188, member: 26227"] From what you have said: here are my deductions on POI shift and your pressure signs. first Cera-Kote adds to your dimensions, so if you have the action bedded to the stock your stock might be bending your barrel up slightly. that is one thing to check. second, if the 'smith used a live center instead of a 4 jaw chuck to thread; your crown is AFU (all F-ed up) . I have had model 10 FP's 223 and 308 their crowns are target 90 Deg crowns and are easily ruined by certain machining processes so I would take a really close look at the crown, if it looks like it's had a 60 Degree cone shoved into it hard; get it recrowned. this could also be why you have pressure signs, the crown could be a bit of a choke at the end bringing your pressure up or the 'smith took some of your headspace away by giving you an even tighter chamber when he put the barrel back on. In the past muzzle brakes have only helped any of the rifles I have added them to. your problem in my mind is not with the muzzle device. Experiment time; take it off and things go back to normal then we have problems with the muzzle device. I have no experience with suppressors. I do know that they make an AR-15 need more maintenance, after that I have only shot some of my friend's cans on AR's and one bolt gun. [/QUOTE]
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My 308 has me baffled
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