My 41 has the 5" barrel it was used by an Army shooter (Maj Henry Bires) to mimic the weight of the 1911. Both were F.Bob Chow pistols (Hank was close friends with Bob). When Bob was still at the store I was able to talk with him about these guns. It is under 5,000 # and was shot for untold numbers of rounds. It shoots tiny groups at 25 yds using the top of the Pachmeyer Box as a rest. It doesn't seem to care what it is fed, HV, standard, whatever. It has been shot a lot using HV 22 which could be regarded as abused. Point being it apparently won't wear out. I now shoot CCI SV exclusively but as stated there have been thousands of HV through it. I've had it and Hank's 1911 since 1980 and was told by S&W at that time that it was perfectly OK to shoot HV in a 41. I keep it wet and don't even try shooting anything at 50 yds. Over the years, I've done a lot of testing various brands, velocities, and such. It may do better with CCI SV but the difference is not dramatic.