I just reloaded my first 15 9mm reloads 124gr extreme plated, 4.2gr hp-38 seated to 1.140 with mixed brass and Sellier and bellot primers.
4.0gr sounded a little light yesterday so I went to 4.2gr and they cycled fine and sounded fine. the reason I'm asking is 4.4gr is max and I'm only 2/10th away from that. so how do I know If say 4.2gr is too hot? brass looked okay to me. gun is 4.5inch barrel M&P.
4.0gr sounded a little light yesterday so I went to 4.2gr and they cycled fine and sounded fine. the reason I'm asking is 4.4gr is max and I'm only 2/10th away from that. so how do I know If say 4.2gr is too hot? brass looked okay to me. gun is 4.5inch barrel M&P.