"Smokeless" ? Blasphemy ... LoL! And did you say fill 'er(.41mag) up with H296?
Here's what I hunt with and for with it... and a .45 Colt full a fffg BP under a 455 Conical as a backup.
.45/70 1872 H&R Buffalo Classic packed with BP (63.7gr) under a .459" 405gr H.B. Boolit...
or one a these
And I hunt these things
Jus' havin' a lil' fun with ya too ... nothin' wrong with a 28gr load in a .44 that's what I usually load... Yer a good sport and welcome to the BP Shootin' Gallery NOZ :O)