That is a beauty and I hear they are good shooters too. Be prepared to spend lots of time working out an accurate load, bullet diameters, bullet alloys, bullet lubes, powder granulation, powder weight, tinkering with sights and so on. Also the heavy powder charges behind a heavy bullet runs up pressure and nipples seem to burn out pretty quickly, another thing to tinker with. I've heard you may get less than a dozen shots from a stainless steel nipple and maybe one hundred from an Ampco nipple. Most serious long range shooters go to a platinum lined nipple to resist burn out but they are not cheap.
Have fun and we won't expect to hear from you for a while because that new toy will keep you very busy.