I have the Ruger 38-40 and I usually just use cast bullets and the handgun loading data, but the Lyman Cast Bullet manual has rifle loading data for the 38-40 which moves it on up a notch or two. I use to load it a little on the heavy side, but now if I need something more I just use a bigger gun. I bought the 32-20/32MAG when they first came out, I think I paid $160.00 for it through Buckeye Supply. I still have the catalog. If I had bought the 38-40 when they were first available I could have got it with a matching ser. no., but short of funds at the time. I just recently bought a Lyman mould for the 38-40. I don't know why Ruger has never chambered these cals. since, I would think that they would really sell. I would like to have both cals. in the old model Vaquero.