Coldest temp you've hunted in?
Just curious what the coldest temp you've hunted in with your muzzle loader and what load did you use?
Patched ball shooters, what patch lube did you use?
Conical shooters, what lube was on your conical, if any.
I've hunted in the low 30's before with patched round ball and bore butter. Snow and then warm temps later in the evening caused a great deal of rust issues despite the bore butter.