Puffer has one and I've shot it a couple times, the thing is a tack driver!
Yep. I wish I could shoot it up to It's Potential.
I got mine in a "Trade" & it came with a 12 ga. bble. that just "drops in"
I also own a "Tyron" ( capper) & did own a Jager ( which was the gun I Traded for the Mortimer )
I currently owm a pair of Mortimer "saw handle" Pistols ( 1 flint & 1 cap ) these are REALLY tack Drivers.
Any way, IMHO if the Mortimer Fits you ( reach), the weight ( about 10#) & your "persona, then you will NOT be disapointed
Puffer