I personally like RCBS dies, just my preference.
Load Data ...
Siamese 8x52Rmm Type 66
Original Cartridge:
Case Length: 2.047 / 51.9938 mm
Overall Length: 2.941 / 74.70 mm
Rim Diameter: .560
Rim Thickness: .065
Base Diameter: .506
Neck Diameter: .348
Bullet Diameter: .321 ... 181gr. spitzer boat-tail bullet, lead cored, a gilding-metal or copper-washed steel FMJ jacket
FPS: 2250 / MPS: 685
Nosler .323 180 gr. Ballistic Tip SD: .246 BC: .357 bullet ... (this was the closest to the original specs above)
Results:
IMR 3031 ... 38.5 to 38.7 grs. = 2250 fps
IMR 4064 ... 40.5 to 40.7 grs. = 2250 fps
IMR 4320 ... 42.5 to 42.7 grs. = 2250 fps
IMR 4895 ... 42.3 to 42.5 grs. = 2250 fps
Case: Remington R-P / Reformed by Buffalo Arms
Primer: Winchester Large
Case Length: 2.037
Overall Length is 3.037
I recently tried to use both IMR 4350 and IMR 4831 in load development and this powder is just to slow burning for this cartridge as it was leaving alot of unburnt powder in the barrel, stick with powders that have the same burn ratio as the above I have posted. My next load development project is Winchester 748.
Patrick
Load Data ...
Siamese 8x52Rmm Type 66
Original Cartridge:
Case Length: 2.047 / 51.9938 mm
Overall Length: 2.941 / 74.70 mm
Rim Diameter: .560
Rim Thickness: .065
Base Diameter: .506
Neck Diameter: .348
Bullet Diameter: .321 ... 181gr. spitzer boat-tail bullet, lead cored, a gilding-metal or copper-washed steel FMJ jacket
FPS: 2250 / MPS: 685
Nosler .323 180 gr. Ballistic Tip SD: .246 BC: .357 bullet ... (this was the closest to the original specs above)
Results:
IMR 3031 ... 38.5 to 38.7 grs. = 2250 fps
IMR 4064 ... 40.5 to 40.7 grs. = 2250 fps
IMR 4320 ... 42.5 to 42.7 grs. = 2250 fps
IMR 4895 ... 42.3 to 42.5 grs. = 2250 fps
Case: Remington R-P / Reformed by Buffalo Arms
Primer: Winchester Large
Case Length: 2.037
Overall Length is 3.037
I recently tried to use both IMR 4350 and IMR 4831 in load development and this powder is just to slow burning for this cartridge as it was leaving alot of unburnt powder in the barrel, stick with powders that have the same burn ratio as the above I have posted. My next load development project is Winchester 748.
Patrick
