Careful with Preparation H. It shrinks things.
I brushed my teeth with it by mistake one morning and walked around puckered all day!
And for land's sake, don't use it for bullet lubricant! I lubed a .44 conical with Prep-H one day, for my cap and ball revolver, and before I could get it seated, the bullet shrunk to a .36!
Just went "plunk" into the chamber.
I heard tell that one guy ran a patch of it down his rifle bore. The next morning, his favorite .30-30 was a .22!
I swear on a stack of phone books!