Quote:
Originally Posted by JohnHL
The pictures posted by oldman10mm graphically illustrate the difference in chamber size and construction between the two frame sizes.
My concern is that the vast majority of these conversions are made on aluminum framed pistols.
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I did a quick check both of my M&Ps' chamber walls. I have 40s&w AND 357 Sig barrels for both. All four chambers miked at .085 (2 each, 40s&w, 357 Sig on an M&P and 40s&w AND 357 Sig on an M&Pc) at their skinniest points.
Since there are 357 Sig chambered M&Ps out there and no known (To me) M&P chambered blow ups on .085 chambered walls, It doesn't appear that a 357 Sig chambered 5906 with a nominal .090 wall thickness is anything to worry about.
Both of my 4046s are stainless steel anchors. Their frames don't worry me.
MY 410s, however, will forever stay a 40S&W.
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