45 Colt Carbine Cast Bullet Tests.
20” Stock rifle plus a 1-4x32mm Bushnell scope, from a bench at 50 yards.
Winchester brass with WLP primers used with all loads. Cases trimmed to 1.275”.
I only used gas-checked cast bullets because of the pressures involved. Used the pressure limits (16,100 - 28,300 PSI) of the 45 Colt loads in current manuals for Ruger, Dan Wesson, Thompson Center, I added our Carbine into this group based on the opinions of the knowledgeable of this forum. I tried every powder listed in my manuals. Chronograph used to come up with velocities, software used for PSI values and load densities.
300 grain hard cast bullets tested are:
Beartooth 300gr LFN GC .452 C.O.L. 1.690
Most accurate 24.6 grains of Hodgdon LilGun
Velocity averaged 1653 fps; 92% Load Density; 26,446 PSI
Next accurate 21.1 grains of Vihtavuori N110
Velocity averaged 1527 fps; 97% Load Density; 23,645 PSI
Beartooth 300gr WFN GC .452 C.O.L. 1.595
Most accurate 14.8 grains of Vihtavuori N105
Velocity averaged 1417 fps; 85% Load density; 24,146 PSI
Next accurate 22.4 grains of Hodgdon LilGun
Velocity averaged 1576 fps; 97% Load Density; 26,245 PSI
Beartooth 300gr WLN GC .452 C.O.L. 1.675
Most accurate 23.7 grains of Hodgdon LilGun
Velocity averaged 1622 fps; 94% Load Density, 26,12 PSI
Next accurate 16.1 grains of Vihtavuori N105
Velocity averaged 1481 fps,; 85% Load Density; 26,509 PSI
The most accurate 300 grain is the Beartooth WFN GC with 14.8 grains of Vihtavuori N105. 50 yards gives me a 10 shot group of one ragged hole. I tried other bullet weights but the question was for 300 grain.
I have all the Laser Cast True Shot bullets (only gas check) and most of the Beartooth gas checked. My order for Cast Performance bullets have not arrived yet. If anyone can recommend any others Brands, I would like to try them. I just started using cast bullets, just don’t cast my own, use all my extra time loading and shooting.
Mike