My own example is a nice-enough MR-221, set up for the 350gr Woodleigh RNSN at 1950fps.
That's .450 x 3 1/4 and .500/.450 Nitro-for-Black ballistics right there, all day long!
Accuracy is on a par with most older .450 doubles too.

Crazy not to have one in the gun-safe, for the price.

BTW anyone here gotten around to laying solid ribs on one of these things? Always been my intention, just lacking motivation up to this point.