Recently got some fresh 45-60 cases that a vendor trimmed from Starline 45-70 cases to load for my 28" Cimarron/Uberti 1876 Centennial Winchester clone. I have used my 7/8" Lee 45-70 die set in the past to reload 45-60, except for crimping because the 45-60 case is ~ 0.20-some inch shorter and the 45-60 case is too short for the Lee 45-70 seat/crimp die.
Previously I used a home-built case cannelure tool similar to the C-H boolit cannelure tool and would seat the boolit to the case cannelure ring. While it stopped the boolits from seating deeper in the case when loaded in the 1876's magazine during firing, the pull on the boolits was variable without a crimp.
Enter the set of Lyman 310 dies in 45-70 that I've had since the late 70s. The 310 boolit seating and crimp die can be adjusted sufficiently deep to crimp a 45-60 case exactly where I wanted / needed in the cast boolit crimp groove and how deeply. Now I don't have to use the cannelure tool, and I can stop searching for expensive, unobtanium 45-60 dies.
The load is 12 gr of Unique under a 300 gr commercial cast boolit, itself over a dental wax wad cut by the case mouth by manually starting the boolit on a wax sheet placed over the powder-charged case mouth. The wax wads have worked well for me for over 40 years to reduce or eliminate leading.
Noah