M&p .40

[bryan sandlin]

just did a trade for one very nice looking pistol. 40 s&w, rounds. box, 3 -14 round mags. but a question has came up. on all of the mags, .40 s&w and .357 is stamped. I know that the total length of a .357 is greater than a .40 any help on this? thanks

[Coach W]

It's talking about the 357 sig

357 sig: Overall length 28.96 mm (1.140 in) Base diameter 10.77 mm (0.424 in) Shoulder diameter 10.77 mm (0.424 in)

40 S&W: Overall length 28.8 mm (1.135 in) Base diameter 10.8 mm (.424 in) Shoulder diameter 10.77mm (.423 in)

These mags often interchange in various guns... As the bullets are Dang near identical.

[bryan sandlin]

thanks. now if I ever run across a box of 357 sig, its mine also.

[Coach W]

thanks. now if I ever run across a box of 357 sig, its mine also.

The 357 sig is a .355 Bullet diameter

The 40 S&W is a .40 bullet diameter.

You will need a barrel swap to shoot the 357 sig out of your current m&p 40...

Just because the mags interchange doesn't mean the bullets will fire through the gun.

If you buy a box of 357 sig your gonna need a 357 sig barrel also before you can use it.

[smb250]

Everything Coach has said. Dont try and shoot 357 sig with the 40 cal barrel. I have seen what happens. Not pretty.

[bryan sandlin]

double thanks.