I forgot to mention that I wouldn't skimp on rail lube....I would do what is recommended by the manufacturer. However... Mission lube is probably very close to other brands. My Excal lube and wax says "for all crossbow brands " on the tube. Vaseline and chap stick, for example, is not a good cheap substitute for rail lube. Its not the same . It will probably gum up a trigger and catch all sorts of dust and sand. It may ruin the string and serving also.