They fit. You'll play he11 getting them tightened and locking them in place sometimes, but they do fit. I have to Lee 4 hole turrets set up for my moderate volume cartridges and I use Hornady rings on almost all of my dies, as I prefer the clamp on locking rings to the RCBS set screw type which smash into the threads, and I like them better than the hand-tighten Lyman or Whidden locking rings without wrench flats.
Here's what I do, and I never have any issue with getting them tightened down or accessing the locking screw:
- Put the first die into the turret head, adjust to position, and lock the ring. Make a witness/index mark on the turret head and on the lock ring AND on the die body to ensure the locking ring doesn't creep (I always use dead away from center of the turret, in case my mark gets inadvertently wiped away).
- Put the appropriate die into the press in the opposite position directly across the turret - skipping a hole, adjust, lock, and witness mark. If I'm only using a 2 die rifle set and I'm not charging in the press, I'm done here. If I'm using a powder drop, a charging die, or loading handgun rounds where I'll have an expander and potentially a finishing crimp die, I proceed to the next step below.
- Remove both dies from the head, and install the other 1-2 dies in the same manner as the first, putting putting them in their opposing holes.
- Leave those in place, then thread the first two dies back into the turret, bringing the locking ring indexing mark back to bear on the turret mark. Done.
If I DON'T do the above, wrenching the locking rings down tight, and locking the rings onto the dies, is a pain in the butt, if not impossible. They only have 2 wrench flats, so you can't really get a wrench on them, and the locking screw is only accessible from one side, so if that's against another die, or in the middle of 4 dies, you're screwed. Once the rings are locked on, you can take them in and out of the turret head without any drift.
Even when using a 2 die rifle set, I skip a hole in my turret, as it lets me either use a powder drop, or charge on the press with a powder through funnel die. I don't always do it that way, but skipping a hole gives me the option to do so. I have to index all the way around the horn whether I have the 2 dies in consecutive holes or in every other hole, so it really doesn't change anything to skip a hole for a 2 die set anyway.