Daryl, I would be far more interested in a cartridge firing conversion ie the lock plate length.

The Pedersoli .45 Long Colt/.410 "Howdah" has such an overly long horizontal plate.

Plus while probably great for fun shooting at a range, a .45 Colt doesn't meet the Howdah pistol power needs IMO. I'd get a Pedersoli .45 Colt though for fun shooting at some special charging or better keeping tiger target event, if a permit was applied for and the readies were in hand.

I wonder how at Pedersoli .45 Colt would go at a 100 metre metal silhouette competition? Perhaps with improved sights?