In 223/223AI/270 and Speedmire,I prefer the Montucky. It's 2.815"-ish box is more than plenty,for 90 Beer Cans and 112's. I drive them all in 7" RPM. Hint.
The Fieldcraft's Swan Song is their 3.00"+ COAL and that do some SERIOUS favors in other chamberings and especially 7-08 with 180's at 2600fps. Hint...............