I took 4 revolvers to the range today for some testing and general target shooting.
Smith 625-8 4”
Smith pre-27 3.5”
Smith 10-9 2”
Colt Trooper MkIII 4”
After shooting:
I’ve included previous chrono numbers for these loads with new info:
38 Special:
148gr Acme DEWC
3.1gr Titegroup, 1.16” COAL, Remington SP
4” Trooper MkIII: 775fps
2” 10-9: 700fps
158gr X-treme/Summit SWC
4gr Win244, 1.46” COAL, Remington SP
17.4” Henry Summit: 1050fps
4” 19-3 Summit: 822fps
4” Trooper MkIII Summit: 820fps
3.25” 66-5 X-Treme: 760fps
3.25” 66-5 Summit: 815fps
2.5” 66-7 X-Treme: 715fps
2.5” 66-7 Summit: 770fps
2” 10-9 Summit: 725fps
2” Magnum Carry X-Treme: 649fps
357 Magnum:
158gr Summit SWC
13.6gr Enforcer, 1.61” COAL, SPM
4” Trooper MkIII: 1105fps
4” 586: 1090fps
3.5” Pre-27: 1075fps
2.5” 66-7: 1060fps
158gr Summit SWC
6gr Win244, 1.61” COAL, SPP
17.4” Henry: 1300fps
4” Trooper MkIII: 1030fps
3.5” Pre-27: 985fps
2.5” 66-7: 975fps
45acp:
255gr SWC
4.7gr Herco, 1.17” COAL, Win LP
5” 1911: 795fps
4” 625-8: 730fps
Some observations. I’ve always loaded my 357’s to max length at 1.61 inches. Always worked fine in my Smiths. Right to the end of the Smith 27’s cylinder, but no issues. Not so in the Colt Trooper. I’m going to have to shorten the length for proper functioning in everything.
Smith 625-8 4”
Smith pre-27 3.5”
Smith 10-9 2”
Colt Trooper MkIII 4”
After shooting:

I’ve included previous chrono numbers for these loads with new info:
38 Special:
148gr Acme DEWC
3.1gr Titegroup, 1.16” COAL, Remington SP
4” Trooper MkIII: 775fps
2” 10-9: 700fps
158gr X-treme/Summit SWC
4gr Win244, 1.46” COAL, Remington SP
17.4” Henry Summit: 1050fps
4” 19-3 Summit: 822fps
4” Trooper MkIII Summit: 820fps
3.25” 66-5 X-Treme: 760fps
3.25” 66-5 Summit: 815fps
2.5” 66-7 X-Treme: 715fps
2.5” 66-7 Summit: 770fps
2” 10-9 Summit: 725fps
2” Magnum Carry X-Treme: 649fps
357 Magnum:
158gr Summit SWC
13.6gr Enforcer, 1.61” COAL, SPM
4” Trooper MkIII: 1105fps
4” 586: 1090fps
3.5” Pre-27: 1075fps
2.5” 66-7: 1060fps
158gr Summit SWC
6gr Win244, 1.61” COAL, SPP
17.4” Henry: 1300fps
4” Trooper MkIII: 1030fps
3.5” Pre-27: 985fps
2.5” 66-7: 975fps
45acp:
255gr SWC
4.7gr Herco, 1.17” COAL, Win LP
5” 1911: 795fps
4” 625-8: 730fps
Some observations. I’ve always loaded my 357’s to max length at 1.61 inches. Always worked fine in my Smiths. Right to the end of the Smith 27’s cylinder, but no issues. Not so in the Colt Trooper. I’m going to have to shorten the length for proper functioning in everything.