Have a Sig P220 with heel clip mags. Not sure when I got it new, but at least 30 years ago. Countless 1000's of rounds through it. Just checked the structure and no cracks I can find. Not a heck of a lot of wear marks other than holster burnishing. I'll let y'all know when it falls apart.
P.S. I was looking through my old loading journals, (you do have one, right?) Anyway, in the 80's I went through a pistol deer-hunting phase for several seasons and developed a 250 grain semi-wadcutter load with an unprintable load of Blue Dot that entered and exited several whitetails. Seems if anything would stress the alloy frame, that would be it. Still wondering as I'm wandering.
Last edited by Airman Basic; July 21, 2013 at 07:28 PM.
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