S&W 457 Magazine Partially Stripping 2nd Round

[Chumango]

Yesterday after a range visit, and cleaning and reassembly, I noticed that when I let the slide go to battery, in addition to chambering a round, the second round was also partially stripped. The only way I noticed is that after chambering the round I dropped the magazine to add a round (standard practice). It dragged a little in the magazine well, and the round on top was moved a bit.

Since I had not observed this before, I experimented, and this would happen to one degree or another with each round. Sometimes it would only have moved a little, sometimes far enough that when I removed the magazine there was enough resistance by the round when removing the magazine, and the round far enough forward, that the top round came out of the magazine. It did not matter if it was the first, middle, or last round in the magazine. I tested a new magazine, which has no more than 30 rounds fired from it, with the same results.

This pistol has never exhibited any feed problems. If I just continue to rack the slide without removing the magazine, it still feeds and ejects the rounds without problems. But since I had never observed this before, I have to wonder, is this a sign of something starting that I need to check out?

Any thoughts?

 

[9mmepiphany]

it's normal...all my pistols do it to one extent or another.

it seems to be most often seen on single stack pistols chambered in .45 ACP. Sig went as far as to slightly indent the magazines of their P220 mags to hold the next round. i don't think it was worth the trouble and it wouldn't influence which mags i would purchase