Buddy of mine has a Remington 6 cyl revolver that takes the 30 carbine rounds.
Don’t know if I’d want to be behind that sucker when it goes off! But I guess that would be better than being in front...
;-)
Remington?
I got a Ruger Blackhawk that shoots .30 carbine. It’s really fun, super accurate and has about 6-8in of flame when it fires.