I hunted for over ten years in Georgia with my TC Hawken, using black powder and round balls. There was no muzzleloading season, so, sometimes I took the scoped Mauser, sometimes I took the Hawken. The season was three months long.
It might be that it was six weeks between shots with the Hawken. I always left the gun loaded, and never had a failure to fire. I was meticulous about cleaning all the oil from the nipple, barrel and drum with pipe cleaners, etc. It is very humid in Georgia.
Now, up here in North Carolina, I shoot the Savage. I have left it loaded for ten months with no ignition or accuracy problems.