I just can't imagine what it would take to find - and pay for - an original Pope rifle. Take that $1500 rifle from 1992 and add a zero, just to start with.
You might talk it up on the ASSRA board.
There are some new made period styled scheutzen rifles.
CPA has a very nice Stevens 44 1/2, a friend recently bought one in silhouette configuration that is a fine shooter.
There are several other makers of period rifles who might do a scheutzen or you could have a custom gunsmith use one of their actions.