9x57 used slow and heavy 357 bullets in that weight range. I can't really see any handgun with room for nearly an inch of bullet.
The other option is a paper patched bullet, and your nose length is really the top of the paper, not the end of the case.
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I used to love being able to hit hard at 1000 yards. As I get older I find hitting a mini ram at 200 yards with the 22 oddly more satisfying.
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