Avoid super-soft black powder lubes. Ruined a hunt shooting BigLube boolits lubed with extremely soft lube. Accuracy just got worse and worse shooting it, and it took a while to figure out that the lube was the cause. Clogged the barrel so bad that when we took it off and looked thru it, you could hardly make out that there was any rifling in there at all.
The smokeless-type lube probably won't hurt, but I can't say that for sure. I don't think it would help.