Josh, thanks for the reference to the DGJ article. It seems there is a distinct possibility that this may in fact be an original Lefever built double rifle with new "interesting" case colors. This leads me to more questions. What would the breech pressures of this cartridge in its' original form have been? Assuming it is more than the 7000-8000 psi we are cautioned to limit loads to with shotgun barrels, how does the same gun with the same breeching and wood inletting hold up with higher intensity rifle loads? I've been looking for a copy of Ellis' "Building Double Rifles on Shotgun Actions" to see how this is handled. I'm thinking that a .45-110 Sharps loaded with black powder and 400 gr. bullets would probably generate higher pressure than typical shotgun proof loads. Muzzle velocities would probably be at least 1700 fps, so recoil would get your attention. If these are stupid questions, please go easy on me.
