Well, let's see.
There's the:
.54 Great Plains flintlock
.58 Zouave (Navy Arms/Zoli reproduction 1863 Remington Contract Musket)
.50 TC New Englander
TC Renegade with .45 LRH, .50 LRH & .54 Slow Twist Green Mountain barrels (and a stock on the way from bronko)
.40 caplock longrifle (kind of a Pennsylvania style) I crudely built in the 1960's
12 Gauge side-by-side Pedersoli