I don’t think Dillon makes 45-70 dies. Or at least I can’t find em.

I’m trying to locate the appropriate Caliber Conversion Kit.

What would be your next choice?

Redding?

A quick Google search seems to show Dillon doesn’t make 45-70 dies. If you just need the dies, I’d think any of the common 7/8 x 14 dies would work.

I don’t know what other components you may need to set up a Dillon progressive reloader.

As to dies, I put Redding near the top, at least for the casual reloader. At the price difference, for casual shooting, I do fine with Lee also. Nothing wrong with RCBS or Hornady.

I usually see what’s on sale or available, Midway, Grafs, or even used on fleabay. On can also mix & match dies of different manufacturers.

Check out the Amazon prime website for 45-70 reloading dies…Lee Precision dies are the least expensive at $41.39…the RCBS dies are a little higher at $71.69…the Redding dies are $89.94…the only 4 die .45-70 set shown is the Lee at $63.19…I’ve had excellent result's with the Lee Precision 4 die pistol sets especially in a Dillon 650…the included Lee Factory Crimp die works best in a press like the 650 with its more than four die mounting positions especially if it’s being used with the addition of an RCBS or Dillon powder over/under charge lock out die, if you’re using the press mounted powder measure.

I actually prefer Lee dies for anything straight wall. They're easy to adjust and you can get them in a 4-die set with a Factory Crimp Die, which helps with quality control as it has a sizing ring and allows you to set the crimp separately from bullet seating, which makes adjustment much easier. It's also vitally important on heavy-recoiling calibers like .45-70 where the rounds are going to get stacked end to end in a tube mag.

I have a buddy who is a die hard RCBS guy. He talks crap about my Lee dies all the time. I like RCBS...they make good stuff. But he's always complaining about this or that not working right with his reloads, and I'm just over here cranking out ammo and shooting it, lol.

I do like how RCBS dies lock positively into place. For rifle rounds that I'm not going to adjust much, I like RCBS.

If you have a single stage press, I'd recommend using that for 45-70. There is something therapeutic about loading that big old cartridge one at a time. It's good for the soul.