Does Anyone have experience shooting .40 out of 10mm

Logically, unless every single 10mm case was the exact chamber length for the rim to touch, it is not head spacing on it, the extractor is holding it...I am pretty confident that every 10mm case is not perfect in every 10mm chamber...
 
There's always the Model 610 revolver. It's listed on the S&W website as both 10mm and 40 S&W. I have one and I love mine.

Yes, but u have to use moon clips for the 40s or else they are too deep for the hammer to strike. Moonclips are designed for that , they grip the rim what 3/4 of the way around, extractors only grab a few thousandth of an nch.
 
Logically, unless every single 10mm case was the exact chamber length for the rim to touch, it is not head spacing on it, the extractor is holding it...I am pretty confident that every 10mm case is not perfect in every 10mm chamber...

This true, but no chance of the round slipping past the extractor with a 10mm
 
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