Just curious, but what '06 diameter case -- that is damn near a straight wall to the mouth -- would cycle thru the action, with minimal adaptations.
I'm positing a case that was more or less a originally a black powder number, that would be difficult to overload to higher CUP. Something in the spirit of a .40-70, but with a parent case that wouldn't involve a great deal of re-engineered gunsmithing. Just thinking that a rebore and chamber to something that is limited to lower pressure, would still be a fun shooting gun.
And, this question may be for naught anyway,as I can't think of semi-rimmed base that might make a workable straight wall. Maybe, the .400 Whelen re-named the .400 Rimless Cast-bullet Flinger -- stamped on the bbl?
I will mention that I was shooting a fellow's little .45 Colt H&R single shot carbine a bit ago,and ya know what? It was just one helluva lotta-uv fun. Smacks reactive targets just fine,offhand,at the hunnert yard berm. That's sorta how I see such a project developing with the rifle you describe: a lower pressure, lead-pill, plunkin'-roller, of appropriate magnitude, in a zoot historic levergun.
Besides, if it has that famous crescent buttplate,future generations will thank you.
One of me fave levergun ca'tridges is the lowly and unheralded .35Rem. It gets no respect today,but is a fine and easy to load round, which has reasonable pressure, a useful trajectory and very mild recoil. It's case might shuffle thru that boxy action. I did once land a daid-centre hit on a four inch wide piece of channel-iron standing in a sand bank at 275 yards. 200 grain SP punched right on thru it, neat as a drill bit. Just sayin':it has it's own hunting history and is a fun plinker with CB's,too.
Anyway, I'm up past my bedtime, had a rare beer besides, and thereby disclaim responsibility for the foregoing. Typing while under the influence,Ossifer? Nuh-unh!!
