RE 30-06:
No, it’s most likely in the original .30 Carbine caliber. It’s a weak round. However, that being said, a lot of the GIs loved that carbine because it was light, handy, and easy to carry. The M2 and M3 versions were full auto.
There’s only two other firearms chambered in .30 carbine, last time I checked; a SW revolver, and an old AMT semi-auto. .357 would be much more practical.
Just my 2cents.
“.357 would be much more practical.”
In terms of ammo availability yes, but not in terms of functional reliability. Rims complicate reliable operation in semi/full auto weapons. If your life depends on reliability, you want rimless.