Don't know who sells them, I haven't been looking.
But if you find one buy it, those suckers are a heck of a lot of fun. Load for it, Lee makes a real nice 100 grn .311 mold that works pretty good.
They can be pretty accurate too if you pay attention in your reloads.
(As a side note, the same bullet works great in my Carbine and wife's 32 H&R mag.)
CPT USAR Ret
USAMU Sniper School Oct '78
Distinguished Rifle Badge 1071