Originally Posted by
SecondChance
This I know. maybe I didn't clarify what I was meaning.
What I am after is can I shoot 40 S&W in a 10mm in the semi-auto?
Not in any other style or type of weapon like we do with the various interchangeable rounds with the revolvers like the 38/357 and 454/460, etc...
No! The only gun capabile of that is the S&W 610 revolver. Like was mentioned the auto case head spaces off of the cartridge mouth. The 40 S&W is shorter than the 10mm therefor when chambered in a 10mm auto the case will go in the barrel to where the firing pin can not strike the primer, because it doesnt have a rim to hold it from going up in the barrel.