GregJ Posted April 25, 2020 Share Posted April 25, 2020 Anyone use SW Ultimate Pistol powder in their MPX? I just had the port on my Gen II opened to .060 so need a little more gas than Clean Shot that I had been using. I understand it is slower than CS and faster than Major Pistol, and on par with Autocomp and CFE-Pistol. So far 4.5gr of UP with 124/125 gr is about 130-135 PF, and I get consistent last round bolt hold open. Seems like the MPX will run well with it. Link to comment Share on other sites More sharing options...
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