5.7 Johnson and M1 Carbine

[eb in oregon]

If one has some old parts lying around, a “just because” fun conversion is 7.62 x 25. You won’t gain any performance or accuracy from it, but you can form your own brass easily enough and shoot Spitzer profile projectiles, or standard .308 carbine projectiles.

If I can't have a PPSh 41 I see no need to make a carbine in 7.62x25 as .30 carbine is superior in all loadings and I don't like tweaking magazines or feed ramps. I was fortunate once to have an article published in Handloader magazine (issue 201 Oct 1999) so I'm very familiar with the cartridge. And even though I've still got bunches of it, with a few hundred formed from 5.56 (when I first started working with the cartridge there was no boxer primed brass available and though I've done it I avoid berdan primed). Like I mentioned, "just because" doesn't float my boat much. I've enough to keep me occupied already.

However if a guy want's to do such a project that's all well and good. But the 7.62x33 mm Kurz in a M1 carbine doesn't sit well with me. I've seen rifles chambered in cartridges the receiver wasn't designed to hold. It may work for a while, but eventually it will blow up. I've seen it and applied first aid.