Rule 3 said
"It usally is due to the slide weight and the recoil spring. My SW 41 will only shoot CCI AMMO. CCI SV 40 Gr Target ammo It chokes on Federal Gold medal. It will shoot HV ammo but that hammers the gun and not good for it in the long term"
I disagree with the statement that model 41's are made to run on CCI SV.
My 1980 vintage model 41 will not run on SV, unless you put in a reduced power recoil spring. I have shot Super X HV and now CCI blazer HV since the early 1980's, never replaced a single part except recoil springs, (std S&W springs, no buffer). I shoot around 5000 rds a year thru it, it is still as accurate and dependable has it ever was.
When can I expect for the disaster to start ?
My 41 runs great on Aquila sv(smells funny) and Win/Rem sv ball(military surplus) .22.....................