Get the BC in 45/70 only if you want to have a lot of fun shooting.
You can load a 405 cast with 12 gr of Trail Boss and send a big chunk of lead lumbering down range at 970 fps. It really rings those 10 inch iron plates at 100 yds. No recoil, no muzzle blast, little expense, lots of fun and a great way to get some offhand shooting practice. The barrel doesn't even get too warm.
Or you can shoot the Hornady 325 FTX at over 2000fps. Great ballistics and really mows down whitetails. Two shots, both dropped like a piano fell on them.
If your neighborhood is ever threatened by a mastodon you can load it up so that when you pull the trigger the recoil will make your socks fall down. I had to buy a Past shoulder pad for my heavy reloads. The thick model works great but I need tighter fitting socks.
Don't do it without expecting to start spending money. I bought my BC on sale for $299 just before last Christmas only because it was a cheap way to hunt the muzzloader season in La. and Miss. Next thing you know I am reading this forum, buy a Smith ladder sight, reloading dies, case trimmers, a whold bunch of different bullets, and started reloading again after 30 years, and am working on the forend trying to get better groups. It will shoot 2.5 inch groups at 100 yds with the Smith ladder sight, the circle front sight insert and old eyes. This rifle should not wear a scope unless its a replica of the ones used in the 1800's.
I think I will wind up shooting 405 cast at about 1200 to 1400 for my deer hunting, but I still have some loads to test. Tried 405's at 2000 fps in an attempt to get the same point of aim as my 325 Hornadys, but they kick way too much. The factory Winchester 300 gr HP loads shoot great with reasonable recoil and should be more than enough for whitetails.
I have a .308 bolt gun that will drop deer every time, but it is not as much fun as hunting with the BC.
I have learned a lot from this forum and thank everyone for their help in turning a simple hobby into an obsession.
Get the BC and have fun.
Capt Paul