As stated above your straight walled 38/357 cases won't need lube in a carbide die.
Making your own lube is easy and it smells a lot nicer than the bought stuff. For a few £s you can get a small bottle of Lanolin and the gallon of Isopropyl alcohol (make sure it is 99%+ and not one of the lower concentrations), all you need is a small pump spray bottle (look under your sink, I bet you'll have one in there somewhere) and you'll be good for many 1000's of rounds.
And if the worst hap-pens you can always drink it and die happy but blind.
Good deals with: svincett, dave milne, Muskett, Dreben, roger.kerry, TALL, Helidave1, Chelseablue, Leeroy7031, Mousemann, pnuk, Practical, NEWFI, HOOGS, Webb22, lazybones1416 and deanw5262 among others. Thanks Guys.