Re: Re-forming modern commercial brass into .56-.50 Spencer
Originally Posted by
Eggman
Wondering who has equipment to atttempt this -- Ray Rapine?? Wondering if the machine time will not push the cost right back where we are.
It's not all that complicated. The 500 Linebaugh cartridge was based on a 348 Winchester cartridge case cut down to 1.5 inches and afterwards the inside reamed out to .500-inches. The case diameter of 348 Winchester is 0.553" being the same as .50-70 and, of course, .56-.50. The lower shoulder of the neck measures 1.65" from the base, such that is it not necessary to reform the neck, but merely cut down the case and ream out to the desired .510. The OAL for .56-.50 is 1.156" (as measured from Buffalo Arms unprimed cases), also with a case mouth of .510. The only major concern that I have is with the rim diameter, which the 348 Winchester is reportedly .610 whereas .50-70 is larger at .636. The rim diameter of Starline's .56-.50 brass for the Armisport is reportedly .629 to .632, so it may be that it is the rim diameter of 348 Winchester that renders this idea mute? However, while the rim diameter may cause extraction problems in rapid-fire action, they may work okay in single-shot mode?
First Cousin (7 times removed) to Brigadier General Stand Watie (1806-1871), CSA
1st Cherokee Mounted Rifles | Principal Chief of the Cherokee Nation 1862-66
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