Thread: Bumpfire tuning
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Old August 11, 2013, 07:25 PM   #3
Sabre9mm
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Join Date: July 31, 2012
Location: Texas
Posts: 262
Second guess would be possible round pressure, I have found several discussions concerning failure to lock and round pressure, these are .223 rounds (Federal AE bulk)...


Will try ASAP a mag of the M855 Lakecity stuff they are 62gr vs 55gr, and I assume loaded to a slightly higher pressure.

Side question on that, is if the built locks on the return stroke, I would assume round pressure being a factor would be not pushing it back as hard, therefore not as much forward momentum on the return stroke?

This is me learning more about the weapons function, troubleshooting and repair, historically all I have done is shoot them, but I am finding the function aspects to be fascinating the more I learn about them.
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