Jeez!
Not just '"no," but "HELL NO!"
Bullet dia. on 45/70 Govt. is .458" Bullet dia. on 45 Colt is .452". Without getting the data manual, I expect the brass on 45/70 is much larger diameter at the base.
en.wikipedia.org/wiki/.45-70
en.wikipedia.org/wiki/.45_Long_Colt
-- Google . . . You should learn how to use this resource.