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delta tide · January 21, 2013, 03:05 PM

Using this same bullet, I started trying what I thought was a conservative OAL at 1.140", but I kept getting bullet set back when cycling the dummy rounds. Lack of grip from the case, maybe? I extended the OAL out to 1.150", and this cured the set back problem. After testing live rounds at the range, I got a better accuracy results out of 1.160". This seemed long, but it was still under the max of 1.169", and my M&P9 and M&P9c have no problems cycling the cartridge with this OAL.

I just ran out of the 124gn FMJs, gonna experiment with the 124gn JHPs next (back ordered).

January 21, 2013, 03:05 PM	#2
delta tide Member Join Date: June 9, 2012 Posts: 35	Using this same bullet, I started trying what I thought was a conservative OAL at 1.140", but I kept getting bullet set back when cycling the dummy rounds. Lack of grip from the case, maybe? I extended the OAL out to 1.150", and this cured the set back problem. After testing live rounds at the range, I got a better accuracy results out of 1.160". This seemed long, but it was still under the max of 1.169", and my M&P9 and M&P9c have no problems cycling the cartridge with this OAL. I just ran out of the 124gn FMJs, gonna experiment with the 124gn JHPs next (back ordered).