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Old December 24, 2019, 09:57 AM   #163
mehavey
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Join Date: June 17, 2010
Location: Virginia
Posts: 6,869
Quote:
very long headspace slack
Put that in the Don'tFretAboutIt pile. As mentioned before, 10-thou tolerance is standard for all straight-wall gas guns (look up the 450 Bushmaster as well)

As to slamming the case back hard enough to cause brass extrusion, that would also be the case w/ over-sized (overly-shorten) high-pressure bottleneck cases like the 300WinMag/NormaMag which operate at 63,000. Doesn't happen.

Concentrate on timing.






postscript: You know the commercial stuff is loaded to the gills. Are you getting the same leakage/pressure/extrusion signs?
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