The .22PPC is kinda like a .220 Russian Ackley. The first time you fire the brass, jam the bullet hard in the lands, and it'll blow out the case quite nicely.
My 0.070" short has a chamber that's shorter than the "standard," in theory being a little more efficient on the powder. 50.5 clicks of my 8208 runs at 3590fps with 52 grain Bart's bullets.
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