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Rifles, Reloading, Optics, Equipment
Gunsmithing
Firing pin problems
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<blockquote data-quote="J E Custom" data-source="post: 1934008" data-attributes="member: 2736"><p>Guiding the spring off the firing pin definitely helped with this problem because with the spring fit better on the firing pin there was no contact between the spring and the bolt bore that could cause friction as the firing pin fell on the inside of the bolt. I verified this by applying blue die to the springs (One snaked and one straight). The snaked spring had bright spots where it contacted the inside of the bolt, and the straight spring didn't after 10 dry firings.</p><p></p><p>The loss in consistency was effected by the spring that has to move with the firing pin coming in contact with the bolt while the pin moved. A side effect was noticed that with the firing pin </p><p>spring contacting the firing pin only, the bolt didn't seam to move as much perpendicularly to the centerline when fired/activated.</p><p></p><p>Misalignment to the firing pin hole has not been a problem for me in the past, but it is something to keep an eye on.</p><p></p><p>It is very hard to measure lock time, but consistency has improved with eliminating the firing pin spring from contacting the bolt body on my rifles. I have tried lightweight firing pin springs to decrease lock time and in some cases had other problems. (Inconsistent primer strikes and higher SD's0 so I have gone back to standard firing pins and proper installation of the springs. Problem solved !</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1934008, member: 2736"] Guiding the spring off the firing pin definitely helped with this problem because with the spring fit better on the firing pin there was no contact between the spring and the bolt bore that could cause friction as the firing pin fell on the inside of the bolt. I verified this by applying blue die to the springs (One snaked and one straight). The snaked spring had bright spots where it contacted the inside of the bolt, and the straight spring didn't after 10 dry firings. The loss in consistency was effected by the spring that has to move with the firing pin coming in contact with the bolt while the pin moved. A side effect was noticed that with the firing pin spring contacting the firing pin only, the bolt didn't seam to move as much perpendicularly to the centerline when fired/activated. Misalignment to the firing pin hole has not been a problem for me in the past, but it is something to keep an eye on. It is very hard to measure lock time, but consistency has improved with eliminating the firing pin spring from contacting the bolt body on my rifles. I have tried lightweight firing pin springs to decrease lock time and in some cases had other problems. (Inconsistent primer strikes and higher SD's0 so I have gone back to standard firing pins and proper installation of the springs. Problem solved ! J E CUSTOM [/QUOTE]
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Firing pin problems
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