sinbad339
Member
Well, I learned something new today, and thought it would be worth sharing.
I recently purchased a new Beretta PX4 Compact in 40 S&W, a new caliber for me so I purchased dies and components. I set up my seating die by progressively seating deeper until the round passed the plunk test in the barrel, then set the bullet just a bit deeper. This came out to an OAL of 1.151". I then checked for fit in the magazine, and it seemed fine. I loaded a total of 30 rounds, 10 each at three different charges of Power Pistol. I put about five or six of these rounds into the magazine as a double check, and everything checked fine.
I went to the range today to check these loads, shooting five of the first load out of one magazine, and they shot fine. I started to load rounds of the second load, and with the second round, the first would jam in the magazine; there was no spring pressure to hold the top round. I'll admit I was confused for a minute, as I was sure everyuthing was the same length +/- a few thousandths. then I tried these same rounds in the other magazine; they fit fine. In the end, I discovered that one magazine is goodwith this OAL (it must have been the one I checked originally), but the other magazine was smaller, and they would get stuck. So, I'll be checking all the magazines I have for a gun for new load workups going forward.
I recently purchased a new Beretta PX4 Compact in 40 S&W, a new caliber for me so I purchased dies and components. I set up my seating die by progressively seating deeper until the round passed the plunk test in the barrel, then set the bullet just a bit deeper. This came out to an OAL of 1.151". I then checked for fit in the magazine, and it seemed fine. I loaded a total of 30 rounds, 10 each at three different charges of Power Pistol. I put about five or six of these rounds into the magazine as a double check, and everything checked fine.
I went to the range today to check these loads, shooting five of the first load out of one magazine, and they shot fine. I started to load rounds of the second load, and with the second round, the first would jam in the magazine; there was no spring pressure to hold the top round. I'll admit I was confused for a minute, as I was sure everyuthing was the same length +/- a few thousandths. then I tried these same rounds in the other magazine; they fit fine. In the end, I discovered that one magazine is goodwith this OAL (it must have been the one I checked originally), but the other magazine was smaller, and they would get stuck. So, I'll be checking all the magazines I have for a gun for new load workups going forward.