
I shoot ONLY Pyrodex out of my 38-55 H&R. I love it and the process of working up a load has been great fun. I have tried BP, Pyrodex and 777. I think Pyrodex for the money is pound for pound equal.
Currently using WW brass and a Federal 210 LR primer, a cast lead bullet sized at .379 lubed with SPG and I load it over 47 grains of Pyrodex slip in a .30 wad and set the head to just cover the last lube band on the head.
I scrubed the rifle first and ALL parts to get rid of oil and use Bore Butter for everything from lubing to cleaning and frankly I have zero issues with clean-up and shooting. My groups now are as good as I can see at 100 yards....not bad at all and frankly a blast (ok pun there) to shoot....try it, you'll love it.
Also If your still looking for Factory ammo I have brand new I will part with for a good deal.....let me know.