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I find it interesting that you mentioned the 460 S&W case. I owned a Frank Wesson Long Range barrel in the 45-60 Wesson target cartridge. I got rid of the barrel, but ended up building a new version on one of Steve Earle's repro actions. I had a chamber reamer made for it and when I went looking for brass, realized that the 460 S&W case had the exact same dimensions, but was 1.8" long instead of the 2.0" of the Wesson cartridge. I use the S&W cases with the bullet seated out a little longer and it shoots great. I also live in Michigan and have used this rifle to fit into the lower Michigan deer regulation cartridge options. The barrel is marked 45-60 Wesson, so it reduces the possibilities of someone deciding to shoot full power S&W ammo in it. Just something to consider.
Bruce

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Im not familiar with the .45-60 Wesson. Sounds like an interesting route to go. I have read some other forums where guys are trimming down .45-70 cases to compliant length but still loading them at factory COAL. I didnt want to go that route, it doesnt leave much bullet left in the case unless you go with a long, and therefor, heavy bullet. The length difference between your .45-60 and the .460 brass isnt as much. Im sure it works fine for you.
The guy that developed this wildcat .458 not only shortened the case, but he shortened the COAL. He is firing his test rounds out of a factory .45-70 chamber but I do have a custom chamber reamer ordered. I had tossed around the idea of just reaming this rifle to .45-70, that way I could fire .full-length 45-70 Govt rounds out of it if/when I ever went hunting somewhere that didnt have the case-length restriction....but since the developer created this round with all the same ballistics as the factory .45-70, there really wasnt any reason to do a .45-70 chamber...and by making a custom chamber machined FOR that round, it would be a little more accurate and efficient. Not only that, but if the possum cops wanted to argue that I was hunting with a .45-70, even though I would firing compliant rounds out of it, there is nothing to tell him/her that I wasnt carrying .45-70 rounds somewhere in a different pocket. LOL. So to avoid that whole confrontation, Ill just build it so a .45-70 wont fit.
In researching your .45-60 Wesson, I came across the .45-60 WCF. I thought about trying to find that brass and trimming it down (less to trim than a .45-70) but they are not only harder to find than .45-70 brass, they have just enough of a shoulder on them, that they would have to be fire-formed into a straight wall. Its not MUCH of a shoulder, just a few thousandths, but it is a shoulder nonetheless....and with the head stamp reading ".45-60 WCF", it could bring about another law enforcement issue....IF the officer asked to see my ammo and IF they knew that factory .45-60s had a shoulder (highly unlikely but still....)

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