Just purchased a 51 navy revolver from cabelas, the one with the brass frame. 45 cal. Ive been shooting bp rifles for over 20 years now and just took interest in the revolvers. Ive been reading a lot and searching on here for the answers to my questions, which so far has been very helpful. Along with the revolver I picked up some .454 balls and the prelubed wads, as far as the powder this is where my question ls. I picked up the triple seven fffg, i recently switched to the triple seven in all my rifles including my 3 percussion caps with good results. My concern is will this powder be ok in this revolver , I know about the 15% reduction factor but im a little confused as to what the safe maximum load is to begin with. The owners manual from Pietta says max is 15 grains the little insert from cabelas says not to use more than 25 grains of black powder. If I use the triple seven and reduce it by 15 % that would be about 12.75 grains if I did my math correct. Wont the ball be seated too far down the cylinder with that little bit of powder? Or doesnt that matter, from everything ive read so far it says that the ball when seated should be about an 1/8 of an inch below cylnder face. Like I said Im completely new to the cap and ball revolver, havent even shot one yet, and want to get as much info and be more than a 100% safe before I try. Im getting older now and my body parts take longer to heal than when I was 20. Thank you all and sorry this was so long. charlie