Of course, you must load what you think is a safe load and one that is comfortable for you.
However, because of legislation and the risk of being sued, manufacturers regularly opine that low loads are best and safest, and the subject of safe loads in a BP revolver come up time and time again on
www.muzzleloadingforum.com, of which a few of us on this side of the water are members.
I've been shooting a selection of .44 revolvers, including my own couple of Ruger Old Armys, with 22gr of Pyrodex P since the late 1960's.
As for real BP - these are the loads recommended by the general consensus of shooters over the way - as found on page 678 of the Dixie Gun Works reference handbook -
.44 modern-made Remington & Colt revolver - 28gr FFFg [22.5gr Pyrodex P]
.44 modern-made Colt Dragoon - 40gr FFFg [32gr Pyrodex P
.36 modern-made Remington & Colt revolver - 22gr FFFg - [17.5gr Pyrodex P]
My Colt Walker, a second-series low number model, takes 50gr of FFFg - I don't shoot Pyrodex in that.
After having all my .44 Mags taken from me here [a problem overcome by having more in the US], I miss the boom and recoil of a big shooter, and find that I can get some of that back with the loads I use behind conicals in the ROA.
The shots still stay inside a couple or three inches at 25yards, as anybody who has seen me shoot in our club can attest.
Of course, you have to figure out the loads that are most accurate for your gun, and boomers need not necessarily be the most accurate. In my case, they are.
tac