J-B paste for fire lapping?

[jonp]

That Kahr barrel needed throating. They have a very abrupt rifling with NO freebore at all at the end of the chamber. Still needs throating even after firelapping so you don't have to seat below what specified COA is in loading data just to get it to reliably chamber ammo.

Check post #77 this is for a CW45 but the same exact issues plague the CW9: http://www.kahrtalk.com/showthread.p...745#post354745

I second this. I've never gotten the Kahr's I've owned to stop and just gave up on them. I posted the trouble I was having and got a number of replies and suggestions but nothing worked. CW45's, K-9, MK-9 etc..All the same.

[jonp]

From what I've read, it appears that J-B paste is mainly a bore cleaner. Has anybody used it with success as a fire lapping product?

https://www.midwayusa.com/product/10...re-lapping-kit

[ShooterAZ]

I have used a dab of J-B Paste on paper patched boolits to smooth out a couple of "rough" barrels, Mosin-Nagants to be specific. It worked OK. The barrel got VERY hot after 5 rounds...