New round rattles in chamber

[Terror Wrist]

Have a new P380. Have fired 570 rounds through it. When I disassemble, I can drop a new, un-fired round in the chamber and it rattles. Not a snug or tight fit, totally loose. When I invert the barrel, the round falls out. 20 of the rounds fired were Underwood +P Xtreme Defenders (1400 FPS), but I read that the P380 is good for +P. The ejected casings are dirty and the bottom of the slide is quite dirty. Is this normal?

[Whaleman]

It is very easy to google the SAMMI specs for a .380. If you have a way to measure the cylinder you can easily see if it is in spec. Dan

[Whaleman]

The cylinder is .3809 and the bullet is .3739. So, the gap between the bullet case and cylinder is .007 or 7 thousands of an inch. Dan EDIT: Remember that is a total of 7 thousands or 3.5 thousands on each side.

[Whaleman]

To put this in perspective the total gap between the cylinder and piston in my 1972 Honda CB750 is only 2.5 thousands. Dan

[Armybrat]

I had a 1975 Honda CB200T.
Sold it for $100 about 30 years ago.

[DJK11]

I checked my 380, 9mm and 45acp Kahr pistols and they all rattle a bullet. I would have never imagined that.

[Waistgunner]

This had me intrigued. I checked all of my handguns (26 of them) and only found one to rattle as you speak. It was a Taurus PT11G2 9mm. I don't own a Kahr handgun, but it was interesting to find out which one rattles with one round in the chamber. My handguns range from high end to mid range weapons to a couple of economy type weapons. I don't know where to place Kahr in this spectrum. Like I said, this was mighty interesting!

[DJK11]

My post is sarcasm. It can’t be a tight fit. Most rounds would never chamber.

[King Rat]

Shake Rattle and Roll Baby

Just tried to do the shake with a Kahr P380, no dice. Same with CM9, Also put a round in a "Case Gauge" and of course fell out when turned upside down.

But if you want some cheap entertainment and some shake music. Checkout this with Ruger. Go to about 14:33 to start the band.

https://www.youtube.com/watch?v=uXeLplv2r1Q&t=924s

[zamboni]

Just checked and a round rattles in mine as well. I wouldn’t worry about it.