Good chance that is a Nevada or California cop... Einstein's is a Norcal and big city Nevada thing...... I'd bet this is over by San Francisco... they don't like shooting bad... er... crim.... ah... anybody over there.
Matt ... if you care to spend the time... when you find the right combo of charge and ball and patch and get the thing to shoot groups you can file on the sights to get POI and POA to match.
Muzzle stuffers can be fussy about the patch thickness... grease the patch... it helps.
you probably know this... take that nipple out of the nipple drum every time you shoot it... and get a spare nipple.
i understand they have nipples that use 209 shotgun primers ... worth looking into
the old time who broke me in (on some genuine old Kentucky rifles) favored one old rule of thumb... one grain per caliber.
40 cal= 40 grains... and in real black you get the powder in f to ffffg grain sizes... ffffg the finest. most small arms use fffg or ffffg and we used to used the ffffg to...