Always use anti-seize lube on nipples and breech plugs.

The best I have ever used is Birchwood/Casey Choke Tube Lube. Don't need to glob ona ton, just coverage. Q-Tip to toothpickworks nicely.

Also, even with lube don't wait too long to get the nipple/breech plug removed and cleaned. I always loosen the nipple or breech plug a bitat the range when I am finished shooting.

Once you have a seized anything on an ML, you will always remember the benefits of anti-seize lube.

M2C

Tahquamenon