diddlyv,
I'd try about 25 gr of the 3F, goahead and use the Lyman drop tube, then try to settle the powder, by tapping or touching the case to a vibratory case cleaner (not a tumbler). Commercial cast bullets work great they just get pricey if you're shooting a bunch. Look for SPG lube or the Rooster lab black powder formula (I forget the color or name). For just playin' around a dab of crisco can be tried for the grease cookie (works well in one of my muzzle loading rifles, don't ask, yes this one needs that kind of treatment). That's the basics, every gun is different, and responds differently, some like a softer bullet lots of lube and a good hard bump from the powder, some like harder bullets and a softer bump from the powder. The one thing they all need is enough lube to keep the fouling soft all the way to the muzzle, without using so much that the excess is slung off in flight. Part of the fun with black is learning what each gun needs/wants.