The advertising for the nickel plated rounds says "it chambers easier and reaction to the elements are nill"This I find somewhat truthfull and a falicy.If you take ordinary brass cases and nickel plate them (which is what the big ammo companies do)you change the tolerences of that ammo.We had a fellow buy Federal Safari ammo for his Ruger No.1 Tropical (falling block)in .375 H&H and there was NO WAY it would chamber unless he took fine sandpaper and sanded off the nickel plating from the rear of the cartridge.That is how tight his chamber was in that rifle.That minute amount of nickel plating made the cartridge jam when he tried to lift the lever for his block to lock!Nickel will not crimp well ,on lets say a 30-30 reload ,or a firearm thats rough on cases like a semi-auto (M1 Garands' are brutal on cases)
and has a tendency of pushing bullets back if a crimp cannot be done properly.IMO if you want to buy nickel loaded factory ammo and use it on a hunt, but don't care about the reloadability, go ahead.Just make sure there are no function problems with your particular firearm BEFORE you go into the field.If you still use leather (other than for show)while hunting ,with all the cordura accessories out there ,then you should re-think about what makes sense in the weather.