If you are not worried about extreme accuracy - if minute of buffalo is OK with you - you may wish to consider paper patching. The original hide hunters went into the field with pretty sparse loading equipment. It was not until the mid 70's that Sharps began offering a complete loading kit with their rifles.
If your shells are only shot in your rifle, you need not resize your shells. Prime (Lee priming tool is cheap and great), pour in powder, a wad, a lube cookie, and then shove a paper patch bullet in.
Making a lube cookie is easy, beef tallow (not the best choice) can be cheaply purchased on eaby. Melt in the wife's pan to about a 3/16 inch depth and let harden. With the wad pressed into your charged shell, invert shell in lube and them shove down with a wood dowel.Yes this is a winter load, in the summer the tallow without beeswax will melt.
Google will reveal much information on paper patching, but remember guys made a living sitting around a fire at night reloading - don't make it complicated or a mystery.
Buffalo Arms will sell you swagged pp bullets and even a brass template for paper, (you can make your own template with a little math and an angle that makes the ends about 52 degrees). Use Buffalo arms paper until you get this figured out better. The paper should be rolled twice around the bullet. Not hard, a little practice, paper can be wet or dry, although I find wet much easier to stick to itself. After a few frustrating attempts you will get the hang of it.
Hand press the bullet into the case, the bullet does not need to be seated deeply, but enough to chamber. Use tallow in the bore, the chamber must be dry. The soft lead will bump up and usually give you acceptable accuracy. Not great, but acceptable. This is the cheapest way to go. Almost no equipment required.
I have never been very successful at hand pressing a naked bullet (grease groove) into a shell without belling the case a bit, and that requires equipment you don't want to purchase. I know this sounds a mystery, but again it is cheap and it works. 50,000 commercial hide hunters can't have been wrong. Paper patching can be very accurate, I am told, but there must be a bit of alchemy associated with it as I can not yet get what I can with grease groove. I'd have to ramp up my skills and knowledge a bit and I am but a minute of buffalo shooter. And, you'd be period correct.
Oh, although I use 2f Goex, some very good shooters find better fouling control with 1f. I don't really experience a difference. You will probably have to wipe frequently with this much powder. Using a 50-70 I have put 20 rds down range with out a blow tube or wiping. Seemed to kill paper very effectively at 100 yards, and while they began to chamber a little bit of difficulty at the end, accuracy did not suffer.I use only tallow in the bore. My .45-110 is wonderfully accurate with grease groove, I have not tried pp with it yet though. So my advice is reflective of doing this with a .50 gvt Shiloh.