No. Those 3 are different.

different lengths
different diameters (.355=.380 acp, .356=.38 auto, .357=.38 special)
different pressures
the .380 acp is rimless the other 2 are rimmed (rim is a larger diameter than the case)

In short, you should only use the caliber stamped on the gun. If the name of the round that is written on the box of ammo doesn't match up exactly, don't use it in the gun.

I would strongly suggest you take a basic firearm introduction class.

Originally Posted by bruce333

No. Those 3 are different.

different lengths
different diameters (.355, .356, .357)
different pressures
the .380 acp is rimless the other 2 are rimmed (rim is a larger diameter than the case)

In short, you should only use the caliber stamped on the gun. If the name of the round that is written on the box of ammo doesn't match up exactly, don't use it in the gun.

I would strongly suggest you take a basic firearm introduction class.

+1 take a class, or at the very least spend a lot of time with someone who knows a great deal about firearms.

Thanks for the help when i bought the gun they sold me 380 auto ammo and before i read the replies i shot the gun and it seemed fine should i not use this ammo again or will it be fine?

Originally Posted by billybob105

Thanks for the help when i bought the gun they sold me 380 auto ammo and before i read the replies i shot the gun and it seemed fine should i not use this ammo again or will it be fine?

380 auto and 380acp are the same.

for clarification when people say "auto" they are referring to "acp" or "auto colt pistol"

welcome to our ever confusing and sometimes nonsensical world of handguns in which the only thing that makes sense is the continuance of learning new things, and the things you already know

The last two posts where deffinetly the most helpful thanks that what i needed so many people telling me they where all different and to only use acp i was worried and wondered why gander mountain would sell me ammo that was gonna kill me but it all makes sense now thanks.

Originally Posted by billybob105

The last two posts where deffinetly the most helpful thanks that what i needed so many people telling me they where all different and to only use acp i was worried and wondered why gander mountain would sell me ammo that was gonna kill me but it all makes sense now thanks.

I have been out of guns for awhile now but if you ever need anything just drop me a PM and I will do my best to get you the info. Good luck with your .380.