Quote Originally Posted by Bimmer View Post
Call me stupid, but I think a .32 or .355/9mm straight-wall (or only very slightly tapered) cartridge based on the .223 would be neat... Kind of a modern day .30 Carbine.

Obviously it wouldn't be good long-range, but it might be a good SBR cartridge.
Reminds me of the Soviet 9x39. 7.62x39 case necked up to .356 9mm 260gr.

Slow, subsonic for short range sniper rifles or SBRs

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