I will go back to basic blackpowder load developement; This is enough for pistol rounds, rifle loads may need a bit more sophistication; - See BROW.
Pick a suitable lead bullet capable of holding enough BP compatible lube. Measure the depth of the bullet that will be inside the case. Load powder, usually fffg, up to this depth or a smidge more, (enough powder to effect a mild compression), Seat the bullet, and Robert's yer Father's Brother.