I know the OP's hunt is over, but for future reference I use electrical (black) tape. I load at the start of the season, tape the barrel, and hunt with that same charge until I get a shot. When not hunting I also set a foam earplug over the nipple and set the hammer down on it. My rifle may be loaded like this for up to two months. If I hunt in the rain, then I'll unload at the end of the day and put a fresh one in before the next hunt, but otherwise it is the same charge. I've never had any ignition issues. A couple of years ago I never got a shot during deer or late muzzleloader elk, and the rifle stayed loaded clear until the next July before I finally took it out to do some shooting. It went off with no hesitation.
Last year I shot a deer with the tape over the end of the barrel and there were no issues. They say the air in the bore between the projectile and the muzzle will blow the tape out of the way before the projectile arrives.
TC makes some red little stickers for putting over the muzzle too, but I much prefer electrical tape. The TC stickers leave a horrible residue after a while that is a pain to scrape off.
The Traditions muzzle condoms won't fit on a .54 cal by the way, at least not on my renegade with the front sight the way it is.