The recoil in a 45-70 in a CB model isn't bad. Naturally, the bigger the grains, the more the recoil. If you shoot say the LE 325 Gr. from Hornady, the recoil isn't bad. The same goes for Remington's 405 gr. shell. When you get into the Cor-Bon, Buffalo or Garrets, then you have some nasty recoil. The 405 gr. recoil is a little less than a 12ga. shotgun. I also have a CB model and an 1895G in 45-70 and enjoy shooting both of them, but my 1895G is my favorite.
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