Hick
11-14-2015, 08:43 PM
I've reloaded thousands of rounds-- but all jacketed. Today was my first excursion into using a CB. So, I'm posting results and some questions. Please feel free to comment and/or critique.
Winchester Model 94 in 32 WS (1949 vintage)
170 grain FN CB (non-GC) rated to 1600 fps (Hunter Supply)
H380 powder
I used some Hornady load data ladders for H380 as my starting point-- they were for a jacketed 170 grain flat nose. Their load data went in steps from 2200 fps down to 1700 fps. I extrapolated a little down from there to get to 26.5 to 27 grains as an estimate for 1600 fps.
It's a little cool here and Speer says to use magnum primers-- but I tried both, since I don't normally have trouble with spherical powder and standard primers. All rounds fired fine.
I set up three load sets (10 rounds each) for chrono: (1) 26.5 grains, WLRM, (2) 27.0 grains, WLRM, (3) 27.0 grains, WLRS
I used Winchester brass and a cartridge length of 2.44 (for the Hunter Supply CB this puts the base of the bullet right about the base of the neck on the cartridge).
Calculated powder volume for these is 74-75% of the case volume under the boolit.
Chrono results: 26.5 grains came in at 1608 fps with a standard deviation of 63 fps
27.0 (WLRM) 1628 fps, stdev 54
27.0 (WLRS) 1622 fps, stdev 59
After shooting I checked the bore and it was glossy with a little bit of unburned powder, but maybe not a shiney as a clean bore. I have no idea what leading should look like, so i'm not sure about any leading.
When I fired the rounds there was some smoke (not lots, but more than with a jacketed bullet).
Thoughts?
Winchester Model 94 in 32 WS (1949 vintage)
170 grain FN CB (non-GC) rated to 1600 fps (Hunter Supply)
H380 powder
I used some Hornady load data ladders for H380 as my starting point-- they were for a jacketed 170 grain flat nose. Their load data went in steps from 2200 fps down to 1700 fps. I extrapolated a little down from there to get to 26.5 to 27 grains as an estimate for 1600 fps.
It's a little cool here and Speer says to use magnum primers-- but I tried both, since I don't normally have trouble with spherical powder and standard primers. All rounds fired fine.
I set up three load sets (10 rounds each) for chrono: (1) 26.5 grains, WLRM, (2) 27.0 grains, WLRM, (3) 27.0 grains, WLRS
I used Winchester brass and a cartridge length of 2.44 (for the Hunter Supply CB this puts the base of the bullet right about the base of the neck on the cartridge).
Calculated powder volume for these is 74-75% of the case volume under the boolit.
Chrono results: 26.5 grains came in at 1608 fps with a standard deviation of 63 fps
27.0 (WLRM) 1628 fps, stdev 54
27.0 (WLRS) 1622 fps, stdev 59
After shooting I checked the bore and it was glossy with a little bit of unburned powder, but maybe not a shiney as a clean bore. I have no idea what leading should look like, so i'm not sure about any leading.
When I fired the rounds there was some smoke (not lots, but more than with a jacketed bullet).
Thoughts?