Someone else may have asked/answered this question in the past, but I was wondering. Since the cost of a decent double rifle is more than some of us can afford, some have suggested possibly purchasing one of the more affordable priced doubles in .45/70. I am aware opinions differ on the potency of the .45/70, but it's still a .45 caliber. So instead of using over-spec and possibly dangerous hand loads, wouldn't a simple solution be to just re-chamber one to something more powerful like .45/90, .45/100 or even .45/120? Of course, if you did re-chamber to a larger cartridge, you could always use decreased loads or even black powder, but shouldn't a rifle of more recent manufacture be strong enough to handle the pressures of those calibers if they were kept within spec?

Just wondering....

J