RE: .45 colt crimp die for a .460 S&W??
If someone came and told me, they shot this good with it, I would have not believed them. I bought this off my brother, and did didnt' show good promise while shooting down in Ky freehand. So when I shot factory ammo that well my first group at a range on a bench, I was so happy, I about cried. Its a Performance model.
Bad news its, hard to shoot freehand. That long 10.5" barrel is just tough to work with. I bought a stoney point tripod just for hunting.
I myself, would go for the RCBS. But there is a chance you might be able to use those 454 dies. I talked to starline, and they recommended only sizing the area where the bullet goes for brass life. In that case, you could use 454 resizer.
You might want to have a 460 FL carbide sizer however. You don't need a seater, or mouth expanding die.You can use your lee.Only extra thing my RCBS seater came with was a seater plug for loading pointed bullets.