ClemBert said:
The "C" Ring appears to be nothing more than a split metal ring with spring tension capability. I doubt this "C" Ring would cost very much. It certainly doesn't look very expensive to own a number of "C" Rings. They wouldn't take much space to store. Additionally, they look just as easy if not easier to install in the Lee Bullet Puller device as compared to a kinetic bullet puller.
First-
The problem is not the "C" rings ("incomplete annulus" in the patent filing), it's the taper required at the top of the body cavity ("conical chamber"). Without the taper, the annulus will slip off the bullet, as the cartridge is retracted from the die (and contacts the lip at the bottom of the taper). With the taper, you have the "variable" grip force required to pull the bullets.
In a "universal" die, the diameter at the bottom of the "conical chamber" would have to be large enough to handle the largest bullet diameter it is designed for, say .358" bullets. That means anything smaller than that will require substantially thicker "C" rings, to make up for the difference in bullet diameter. In order to pull .308" bullets, the thickness of the ring would have to be increased 0.025"* over the nominal thickness (say 0.025" for .358" bullets), for a total thickness of 0.050"*. For .277" bullets, you're looking at 0.062"* thickness. And for .224" bullets... you would need a ring 0.092"* thick. (* speaking of the diameter of the spring stock, not the final formed shape of the ring.)
Although that sounds workable, it is very unlikely to be implemented in a reliable manner. For the smaller bullets, the springs would be too stiff to grip many bullets, and the extra thickness of the "C" rings would cause the bullet to be gripped farther up (often into the ogive for .224" and some .243" bullets).
Secondly-
If this was meant to be a "quick change" system, it would state such in the patent filing, and would explain the method for changing the annulus. As much as Richard Lee likes covering his back side (I don't blame him), I highly doubt he and his legal team would "forget" to include provisions for the quick change system.
I'll state my prediction again:
This won't be a "Universal" or "quick change" system. The best you can hope for, is for several calibers of similar diameter working in the same die. For example: .270/.284, .308-.313, .358/.366, .257/.264.
It will not be universal.
Remember this post, when those pullers hit the market. If I am wrong, I'll eat my words. I will print this thread, and
eat it.