Anyone shot Super Vel 380 out of a MAC?

[strobro32]

I have some Super Vel 380 ammo with a crimp at the base of a bullet. I'm concerned with leaving some of the case in the chamber.

What is the crimp at the base of a bullet called? Is IT called a case cannelure? Can this cannalure split off in open bolt guns?

 

[ATCDoktor]

I have some Super Vel 380 ammo with a crimp at the base of a bullet. I'm concerned with leaving some of the case in the chamber.

What is the crimp at the base of a bullet called? Is a called a case cannelure? Can this cannalure split off in open bolt guns?

The crimp in the case below the bullet on your Super Vel ammo is indeed called a "Case Cannelure" and (as you most probably already know) it's there to prevent bullet setback (the short bullet having very little surface area/neck tension inside the case to hold it in place as the firearm completes is cycle of operation/slide closes).

I wouldn't think that the case would separate at the cannelure on initial firing but I have never fired any ammo with that significant a case cannelure in an open bolt firearm.

 

[Slowmo]

I have reloaded cases with a case crimp/cannelure in open bolt blowback guns without problem. Wanna day some Aguila 9mm has a similar crimp.

 

[skoda]

S

I have reloaded cases with a case crimp/cannelure in open bolt blowback guns without problem. Wanna day some Aguila 9mm has a similar crimp.

Same here but keep an eye on them when you are reloading especially since that is a fairly deep cannelure and with resizing and firing it might eventually crack there. I have had some minimal experience of that happening. I would think that you should easily get ten reloads out of them. Possibly a lot more.

 

[DINK]

Yeah, the casing might possibly crack there, but only after quite a few reloadings. I would use new factory ammo without any hesitation.