Short answer, NO, not even close. Of course in combat, under panic situations I've seen some wierd stuff cramed in chambers, that dosnt mean they will work.
Its not just in combat. I was running sniper schools for the NG and Army. The army was using M21s and some of the NG units were still using M1Cs&Ds. Some of the idiots fired 7.62 in the garands. The garands exstractor would hold the case and they would fire, Brass lookedl like a beltless 458 Win. Had to put a special ammo gun on orders to keep that crap from happening.
You want light 45-70s load them light, but use 45-70 brass, same with all friearms. USE THE PROPER CALIBER.