The Firing Line Forums - View Single Post - A new, fast, small bore semi-auto

DiCarnage · January 5, 2011, 08:36 PM

New, tiny yet powerful rounds:
.224 BOZ
HK 4.6x30
FN 5.7x28
6.5x25 CBJ
Each cartridge is roughly the size of a 9mm round with a notably smaller projectile, and much greater energy transfer.

I thought I was the only one that thought that way along the lines of the .30 carbine until someone showed me something from the 60's called a Johnson Spitfire. A .30 carbine necked down to .22 and apparently it shot pretty well. I don't have the specs, but I've been dreaming of building something similar for about two years now.
Personally, I think the .30 carbine is just a tad long for a handgun round and I'd shorten the cases by just a few mm's, but I think it could yield exceptional performance.

January 5, 2011, 08:36 PM	#45
DiCarnage Senior Member Join Date: November 21, 2010 Location: Southern Oregon. Posts: 105	Hmm... New, tiny yet powerful rounds: .224 BOZ HK 4.6x30 FN 5.7x28 6.5x25 CBJ Each cartridge is roughly the size of a 9mm round with a notably smaller projectile, and much greater energy transfer. I thought I was the only one that thought that way along the lines of the .30 carbine until someone showed me something from the 60's called a Johnson Spitfire. A .30 carbine necked down to .22 and apparently it shot pretty well. I don't have the specs, but I've been dreaming of building something similar for about two years now. Personally, I think the .30 carbine is just a tad long for a handgun round and I'd shorten the cases by just a few mm's, but I think it could yield exceptional performance.