Enjoyed another great morning at the range with my friends. Here is additional chronograph data which I would like to share with you folks:
Firearm - Ruger 4 5/8” Blackhawk
A. 357 Magnum
Lyman 358477
6.0 grs Unique
CCI 500 primer
1.525” OAL (Lyman latest data actually lists 1.510” while a 1973 manual lists 1.550”)
MV string per shot (10 shots recorded):
1,025 fps
1,018 fps
1,023 fps
1,033 fps
1,006 fps
1,023 fps
1,015 fps
1,017 fps
1,028 fps
1,031 fps
ES 27! Tight for Unique!
B. 357 Magnum 158 gr cast SWC 12 BNH (crimped in crimping groove)
13.5 grs Alliant 2400
CCI 500 Primer
MV string per shot (8 shots recorded)
1,275 fps
1,269 fps
1,244 fps
1,233 fps
1,244 fps
1,245 fps
1,268 fps
1,275 fps
ES 42! Yes, that’s right!!! …at this amount (13.5 grs) 2400 starts to behave nicely
C. 38 Special +P 158 gr cast SWC 12 BNH
6.0 grs Power Pistol
CCI 500 primer
1.440” OAL
MV string per shot (9 shots recorded):
1,024 fps
1,018 fps
1,016 fps
1,026 fps
1,019 fps
1,002 fps
1,013 fps
1,020 fps
1,036 fps
ES 34 (these were mixed cases, Power Pistol is my favorite in 38 Spl +P, beats the heck out of Rem/Win/Fed FBI loads. It does have a fun factor bark to it! BTW…5.6 grs of Power Pistol using 158 gr LSWC and 38 Spl +P Starline cases averaged 949 fps during a Nov 2019 outing)
Best to all
Eric