I can't have been the first person to think of this for a 510 Whisper type of cartridge, so someone tell me if this has already been done so I can just copy them.
Take a 500 S&W case and seat a 50 BMG bullet into it. Bam, 30-40-ish grains of powder capacity. Whisper territory.
Of course the 500 S&W uses a 0.500" bore, so you would need a custom 0.510" barrel with a longer throat to allow those longer bullets. Not sure how to specify the throat or what a good value would be.
I was thinking about using the Bauska BBK-02 Magnum action I have for this. I made up a dummy cartridge and with the BMG bullet it will feed from the magazine. The rim is slightly smaller, 0.556" for the 500 vs 0.588" for the 338 Lapua. A difference of 0.032", but the extractor seems to grip it just fine.
So, lets see what everyone else thinks about this.
Take a 500 S&W case and seat a 50 BMG bullet into it. Bam, 30-40-ish grains of powder capacity. Whisper territory.
Of course the 500 S&W uses a 0.500" bore, so you would need a custom 0.510" barrel with a longer throat to allow those longer bullets. Not sure how to specify the throat or what a good value would be.
I was thinking about using the Bauska BBK-02 Magnum action I have for this. I made up a dummy cartridge and with the BMG bullet it will feed from the magazine. The rim is slightly smaller, 0.556" for the 500 vs 0.588" for the 338 Lapua. A difference of 0.032", but the extractor seems to grip it just fine.
So, lets see what everyone else thinks about this.