As somebody who once owned both...I agree with Bud.Honestly Neither
The Mini was first chambered in 223 (1974), then in 7.62X39. They haven't been chambered in .30 Carbine, yet. :wink:The mini 30 used to be 30 carbine IIRC, but now I hear they come in 7.62x39 as you have stated. Had my choice, I would go with the mini 30 in 7.62x39, you can get the ammo as cheap, and as readily available as the 223, and have much more punch.