How to determine Caliber of Makarov Barrel

gnprts

I bought an unmarked Ported Makarov barrel and am trying to determine the caliber. Thanks

b0400879

Measure:
1) Lands/grooves
2) Chamber depth/diameter

gnprts

Barrels has 6 lands

Chamber depth .584"

Chamber diameter .391"

measured with digital vernier caliper

swearengine

380 auto

TRAP55

Sounds more like 9x18mm Makarov.
Slug the bore, .355 = .380, .365 = 9x18

b0400879

Land/groove diameter is not noted: measure the rifling's LANDS & GROOVES.
None of the chamber measurements wash: a SAAMI .380 ACP chamber should be .394" ID at breech face.

Have to suggest using a real caliper: anything but chinese.
Failing this, do us all a favor & take it to a qualified gunsmith for measurement.

quote:Originally posted by gnprts
Barrels has 6 lands. Chamber depth .584".Chamber diameter .391". measured with digital vernier caliper

Hawk Carse

Insert a Makarov cartridge.
If it chambers it is 9mm Makarov, if it doesn't it is .380.
Because of its larger bullet diameter, a Makarov cartridge will not chamber in a 9mm P and it sure isn't going to go in a .380.

AdamsQuailHunter

Hello - I have a PA-63 chambered in 9mm Makarov and a Smith&Wesson Bodyguard-380. Just for giggles - I tried putting the 9mm Makarov cartridge in the Bodyguard-380. Just as Hawk Carse has stated - it will not chamber. Best Regards - AQH

gnprts

Thanks to all Barrel is 9X18