Proper procedure for caliber change

JNad · April 28, 2014, 03:48 PM

I have a Makarov PM which came to me as a commercial Russian chambered in .380 acp. I rebarrelled it to 9X18 in the interest of more reliable function. The slide says .380acp, so my question is: What is the proper procedure for marking the slide?

I am not super concerned as I currently have no plans to sell the gun, but I would hate for someone (my kids after I am gone) to end up putting a .380 in the 9X18 barrel.

Is it enough to mark out/ stamp over the .380 or do I need to stamp the correct caliber on the slide also?

shaunpain · April 28, 2014, 04:10 PM

I would stamp over or otherwise render illegible the. 380. A stamp on the visible part of the barrel should be sufficient, however, a slide stamp would remove any doubt for the next owner.

James K · April 28, 2014, 04:39 PM

I hope you replaced the recoil spring as well; they used a lighter spring when they converted those guns to .380.

Jim

JNad · April 29, 2014, 02:30 PM

Yes, I went back to a standard power spring for 9X18.

I had a vast assortment of springs from trying to get it to run reliably in .380.

April 28, 2014, 03:48 PM	#1
JNad Senior Member Join Date: January 20, 2012 Posts: 105	Proper procedure for caliber change I have a Makarov PM which came to me as a commercial Russian chambered in .380 acp. I rebarrelled it to 9X18 in the interest of more reliable function. The slide says .380acp, so my question is: What is the proper procedure for marking the slide? I am not super concerned as I currently have no plans to sell the gun, but I would hate for someone (my kids after I am gone) to end up putting a .380 in the 9X18 barrel. Is it enough to mark out/ stamp over the .380 or do I need to stamp the correct caliber on the slide also?

April 28, 2014, 04:10 PM	#2
shaunpain Senior Member Join Date: September 12, 2008 Location: Chicago Posts: 854	I would stamp over or otherwise render illegible the. 380. A stamp on the visible part of the barrel should be sufficient, however, a slide stamp would remove any doubt for the next owner.

April 28, 2014, 04:39 PM	#3
James K Member In Memoriam Join Date: March 17, 1999 Posts: 24,383	I hope you replaced the recoil spring as well; they used a lighter spring when they converted those guns to .380. Jim

April 29, 2014, 02:30 PM	#4
JNad Senior Member Join Date: January 20, 2012 Posts: 105	Yes, I went back to a standard power spring for 9X18. I had a vast assortment of springs from trying to get it to run reliably in .380.