I'm not finding a Redding carbide PRO (as in progressive) series seating die in .460 S&W magnum. I'm seeing on eBay a full die set for $114. Nobody seems to have a PRO single.

Part number 94278

https://www.midwayusa.com/product/317648/redding-pro-series-seater-die

https://www.midwayusa.com/product/477370/redding-pro-series-carbide-3-die-set

Lol. Seater die. Not sizing die.

Part 94278 is the seater die. You can also order direct from Redding.

I need the sizing die. I can’t find a separate sizing die anywhere.

Thanks for looking!

You must not use a 550? That's the sizing die position, not the seater.

OP - most 454 Casull sizer dies (and even 45 Colt) will work for the 460. However, don't expect another brand besides Dillon to have any more of a funnel than that RCBS die. If you do have a chamfer ground in the bottom of the die, you'd be grinding into the sizing ring and the case won't be sized as as far down towards the base. I sure wouldn't spend $100 on a Redding die to fix that issue; either use a Dillon die or tighten the shellplate as described below.

Long straight wall cases often have this issue on progressive machines. The first fix to try is to make sure your primers are seated fully flush; if they're proud it'll let the case tilt a little.

The next fix is to tighten the shell plate a little bit more; the cases are able to tilt because your shell plate is probably too loose. A tighter plate holds the rim down flat against the base plate. Tighten the shell plate until there's just a little drag when turning it, then back off a hair, meaning way less than one flat on the hex.

I see another unrelated problem though that'll give you issues sooner or later: you're seating and crimping in the same step with cast bullets. Don't do that; it'll create lead shavings that can cause chambering issues as well as accuracy and leading issues. You want to back off that seater die so it doesn't crimp, and put another crimp die in the 4th hole on that Dillon. Lee makes their collet crimp die for the 460 that works well and is inexpensive.

Also wanted to add - I checked my RCBS and Lee .460 dies, the Lee does have a little more chamfer on the entrance to the sizing die. It's pretty close to having as much as the Dillon 45 Auto die, which should be the same at the bottom as the 460 if they made one.

Gotcha now. Yeah they don’t offer the sizing die separate in their catalog.

First, thanks for the advice.

I've heard from a number of people who've [urlhttps://www.thehighroad.org/index.php?threads/do-you-reload-460-s-w-magnum-on-a-dillon-press.831650/#post-10742531]talked to Dillon[/url] who in turn said that the .45LC dies won't work for .460. And there are a handful who swear they've been doing it forever. Who is right? I'm not qualified to decide.

And you're right, Dillon and Redding PRO series dies have a larger chamfer on the inside of the sizing die mouth. But Dillon doesn't make a .460 die. Sadly, I bought the cheaper RCBS and should've purchased the Redding PRO. Maybe when the next eBay sale shows up I'll get a different die set. In the meantime, I'll probably just keep poking the case into the die.


You're absolutely right--this was my first thought, and I've tightened it down further so even with some drag it is still tipping. As a workaround, I could probably shim the front of the press and tip it back a little...



Ok, here's where I'm confused and need some education. Everything I've read says that TAPER crimping and seating in one step is a no-no, because the case mouth slices lead as the bullet is continuing to travel downward into the case. But roll crimping into a pronounced crimp groove doesn't appear to be shaving lead, as it is below the upper rim of the crimp groove. Am I interpreting and observing things incorrectly?

Both roll crimping and taper crimping in the same step as seating will cause problems with cast bullets. The 550 has 4 holes - take advantage of that. Even the factory Dillon dies are separate seat and crimp dies.

Also as I said above - my Lee .460 die has about as much taper as my Dillon .45 die. They are pretty cheap to try and the seater works better for me than my RCBS dies. I am not an advocate of cheap stuff; this die is actually better than the RCBS despite the lower cost.