I don't believe a pistol should have a break-in period, my HK P7M8 worked right out of the box and I think that's the way it should be.
I wanted a Kahr CM9 though and I wanted to have confidence in it, I didn't want to have problems that shook my confidence in it.
I did almost everything that Jocko on KahrTalk recommends doing for break in. I cleaned the CM9, including using non-chlorinated brake cleaner in the striker channel. I manually cycled the slide 500 times.
Yes I actually manually cycled the slide 500 times.
http://www.kahrtalk.com/showthread.php?1521-Proper-prep-of-a-new-kahr&highlight=break
I noticed on Kahr Talk the the guys who reported problems with the CM9 or PM9 on the first range trip were shooting cheap 115gr WWB ammo. So I decided to use "NATO" ammo for the first few hundred rounds. When I say NATO - I mean 124gr FMJ rated at or near 1200 fps from a 5" barrel. Fifty rounds of the Winchester Ranger RA9124N (NATO) and 200 rounds of the Georgia Arms 124gr "NATO" I considered those 250 rounds the "Break In" rounds. Even after that, I put 50 rounds of 123gr ZQI “NATO” FMJ. The ZQI isn't +P but it isn't weak ammo either.
If I would have started out with 115gr Blazzer Brass and gotten a stovepipe with the first mag, it would have shook my confidence in the gun. As it is, my CM9 now fires 115gr WWB without a hitch. I trust my CM9 and "transport" carry it Illinois where concealed carry is prohibited.
I wanted a Kahr CM9 though and I wanted to have confidence in it, I didn't want to have problems that shook my confidence in it.
I did almost everything that Jocko on KahrTalk recommends doing for break in. I cleaned the CM9, including using non-chlorinated brake cleaner in the striker channel. I manually cycled the slide 500 times.
Yes I actually manually cycled the slide 500 times.
http://www.kahrtalk.com/showthread.php?1521-Proper-prep-of-a-new-kahr&highlight=break
I noticed on Kahr Talk the the guys who reported problems with the CM9 or PM9 on the first range trip were shooting cheap 115gr WWB ammo. So I decided to use "NATO" ammo for the first few hundred rounds. When I say NATO - I mean 124gr FMJ rated at or near 1200 fps from a 5" barrel. Fifty rounds of the Winchester Ranger RA9124N (NATO) and 200 rounds of the Georgia Arms 124gr "NATO" I considered those 250 rounds the "Break In" rounds. Even after that, I put 50 rounds of 123gr ZQI “NATO” FMJ. The ZQI isn't +P but it isn't weak ammo either.
If I would have started out with 115gr Blazzer Brass and gotten a stovepipe with the first mag, it would have shook my confidence in the gun. As it is, my CM9 now fires 115gr WWB without a hitch. I trust my CM9 and "transport" carry it Illinois where concealed carry is prohibited.