I have a Kimber in a K Hornet and use a set of Redding dies with no problems, Fire forming brass ,I load a standard hornet load and it is also shoots a tight group. I load my K hornet loads with 11 grains of VV N110 and a 40 grain nosler ballistic silver tip .224 dia bullet. Thanks Ronnie
If your gun is a current rifle that has been rechambered recently. I would think it has a standarized chamber. Most of the problems/experiments with shoulder angles were solved many many years ago.
And if you order a K hornet reamer now a days you would get what the book deliniates, not one of the variations. Since there were no significant changes in the way the cartridge performed they all fell by the wayside
All of the other variations of the K Hornet were done by PO Ackley, Kilborn and other wildcatters way back when.
I would think it would be pretty cut and dried now but yuou still need to check it out to make sure.
I personally think the classic Bakersfield Gopher Rifle was a K Hornet on a Mini Martini action with a Unertl 8x scope and adjustable mounts. Good wood was a must. I see one every once in a while at the Ventura Gun Show, but I could never afford one. Besides It would be half the fun to build it yourself. That's why I'm learning how to checker.