[reesegr]

So...is a .40 S&W truly .40 of an inch or is it like the .44 mag which is really .429 or .38 special wich is really .357?

just curious..thanks!

 

[Snake-eater 1]

Listed bullet diameter for both the .40 S&W and the 10mm is .400 inch.

 

[reesegr]

Listed bullet diameter for both the .40 S&W and the 10mm is .400 inch.

cool...thanks!

 

[Lurch]

Just for kicks I decided to check with a caliper

Blazer Brass came out to .392"
Barrel ~.372"

My caliper may be off a bit though... its old