M&P 22 Barrel Problems?

[crf450rr]

I've had the same leading problem with Blazers and Thunderbolts...If I get lots of lead build up I use equal parts white vinegar and peroxide to remove the lead...The stuff works great!!!

 

[David Amerson]

M&P 22 Compact

Morning, Where to start 10 mins after buying the pistol the rear two dot sight fell off lost couldn't find it called S&W to send out another they sent me the elevator screw go figure. Now I have the same problem but mine was worse and I was shooting CCI!! Sent the pistol back they replaced rear sight and polished the barrel got it back shot 30 rounds of CCI same thing carried it to local gum smiths and both said that the pistol should have never been sent back out without replacing the barrel. Their are chatter marks or fine burs in some of the barrels and what is happening it is peeling the lead from the bullet now with mine it was peeling so much that it started taking the rifling out of the barrel. Now sending it back for the second time. This was my very first pistol ever and M&P has left a very bad taste in my mouth.