[QUOTE=Jeff Michel;5675015] In my case, mine actually is a Chapparal. I’ve had it for over a decade or more. New, unfired, in the box. My understanding is that the Chapparal chamber dimensions were based on the original Winchester 1876 Centennial’s. I was gearing up to load for some of my other hard to find ammo for calibers and decided to give the 45-75 a go. I don’t intend for it to be a target rifle, I want to hunt with it.