That's a hotter round than I'd want my face next to, on a 3/4" barrel shank, thick walls or no.

I read of guys fitting the Small Martini's in a .223, and still don't like the idea. Not based on any numbers, just, well, not comfortable with it.

I figure either a smaller diameter case, or a lower maximum pressure cartridge is probably more appropriate.

Will the 30-30 go around the "curve" and feed into the chamber on the small Martini?

Or are you dealing with a Large frame Martini? (ex .303, or 577-450)

Cheers
Trev