24" drop tube. mine is a piece of 1/2"copper plumbing mounted on a homemade stand. A copper reducing fitting at the bottom fits the mouth of a .45-70 perfectly. A second one is in my shop, attached to the shelving above my loading gear.
I have many moulds, but an old Lyman 457193, 420 gr. FP, is my favorite. I also use a 457122 Gould hollowpoint by Lyman, a classic deer bullet. The powder capacity of either one is about the same, and I've loaded up to 70 grains of Goex 2F under each for a good "express" load. That was using the drop-tube and a bit of compression when seating, and was LONG SEATED for my Pedersoli Sharps 1874. Read all about how to determine a proper load for Black. Its not the same as getting data from a book for smokeless. For targets, I load a bit less of Cartridge grade Goex and make it up with card wads punched by hand with a cut-off belted magnum case.
I agree with the advice to read a lot before getting going. I know I needed "some" advice & mentoring before I got it even close to right. Mike Ventunino & Steve Garbe are the two best things to happen to BPCR in about a 100 years! (at least for publicizing reliable technics for a lot of shooters.)