How many .40mms are built on 9mm frames with a .40 cal barrel? If the guns aren't holding up, it's because the .40 batters the frame just from normal use. Did 10mms have more maintenance problems that any other semi where the frame was a built for the round fired?

The .40 cal is a bit like a S&W model 19 revolver. Yeah, it will shoot .357 magnums, but it will have a limited life rather than the 'indefinite' life of a K frame .38 special.

Whenever the weaknesses of a particular pistol are discovered after use in the field, it's easier to change calibers rather than address those problems.

And wouldn't it be great if police departments had at least a couple of pistols in their issue for those that can't handle a bigger gun well instead of the 'one size fits all' mentality.

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