Some perspective on .357 mag and barrel length -- actual chron at 5 long paces from the muzzle
Blue Dot Load -- Alliant Max w/158gr GD 10.2gr
Marlin 18" ,158 gr LRNFP, 9.6gr Blue Dot, 1482.5 fps
Marlin 18" ,158 gr RJHP, 9.6gr Blue Dot, 1405.5 fps
Ruger BH 6.5" ,158 gr LRNFP, 9.6gr Blue Dot, 1272.5 fps
Ruger BH 6.5" ,158 gr RJHP, 9.6gr Blue Dot, 1225 fps
Ruger SP101 3" ,158 gr LRNFP, 9.6gr Blue Dot, 1171
S&W M60 3" ,158 gr LRNFP, 9.6gr Blue Dot, 1166
Ruger SP101 3" ,158 gr RJHP, 9.6gr Blue Dot, 1139.5 fps
S&W M60 3" ,158 gr RJHP, 9.6gr Blue Dot, 1129 fps
S&W M360 Ti 1.9" ,158 gr LRNFP, 9.6gr Blue Dot, 1019.5 fps
S&W M360 Ti 1.9" ,158 gr RJHP, 9.6gr Blue Dot, 945.5 fps
Lil Gun -- Hodgdon max w/180gr Nos Part - 15.0gr
Marlin 18" ,185 gr LFNGC, 14.7gr Lil'Gun, 1713 fps
Ruger BH 6.5" ,185 gr LFNGC, 14.7gr Lil'Gun, 1388 fps
S&W M60 3" ,185 gr LFNGC, 14.7gr Lil'Gun, 1175 fps
Ruger SP101 3" ,185 gr LFNGC, 14.7gr Lil'Gun, 1161 fps
S&W M360 Ti 1.9" ,185 gr LFNGC, 14.7gr Lil'Gun, 1023
Paul