My Personal Experience is that using anything sticky like vaseline, Crisco, grease, oil, etc on the barrel/rail winds up causing hair balls, dust balls, other grit and grime to adhere to the rail. Makes for a mess and could possibly get into your trigger mechanism. A dry film lubricant makes life easier, No mess , no fuss,

Teflon spray works absolutely great for me. Jigaloo works well, S&W Dry Filmlube workswell from what I read, but I have no experience with those.