I sent my S-W41 in for mag catch repair. They fixed the catch,but they also put a new barrel on it.When I asked the service rep why he said the old one was "shot out" due to use of Hi Vel ammo. I was very suprised to hear this and Im still puzzled over it. The gun is not that old,and shoots a pretty good grp. The work was done under Smiths warranty,so there was no charge including shipping. Im not the original owner,but they fixed it gratis anyway Thanks. Neil