.45-75 Winchester Shooters?

Anyone on this forum shooting one of the Uberti or Chaparral Winchester 1876 repros in .45-75? Have you got any input on brass or loading or...?

I have one of the Chaparral SRCs and have accumulated some information (http://home.comcast.net/~parslowb/labels/45-75.html) but I'm always willing to learn something new.

I saw that on Chaparral's site about the "45-75" and was thinking "What is this .45-75 cartridge"? ? ? ?

I have heard of the .45-70, .45-90, and .45-120 but I am somewhat confuse-ed about this one.

insert the "Scooby-Doo" answer here . . "Ruh? ? ?"

I am waiting for a 1876 carbine in .45-60,,,,,,,
If you don't know this place, it is a great place to start gathering up ammo stuff for your .45-75
http://www.buffaloarms.com