What Stimpy said!! The .45-70 is a "need to have" Handi, but so is the .223, so take your pick which one you get
first!!
The .444 is available, as is the .45 Colt Carbine, those are the last two that I ordered, you have a nice selection of rounds to choose from that you don't already have, so all ya have to do is decide which one you can't live without now, get the others later.
The .45-70 Handi or BC will handle Ruger level loads, but I doubt you will, specially without a good recoil pad!! Start with trapdoor loads and work up if you feel a need to, even mid levergun loads are stout.
Tim