Hi, new here but not on a few other BP forums. Have a few revolvers and have gotten into making lube as well as having a friend who makes some really excellent Gatofeo.
As I understand it (and has been working nicely for both my friend and I) its the wax used in home canning of jellies and jams that you want. It IS Paraffin (and therefore petroleum based), but for some reason doesnt have the same adverse effect... Or at least not as bad.
With beeswax costing what it does, and times being what they are, the idea of using wax that can also be used for canning and costs only a fraction of the beeswax... Eh.. Its basically the only thing that many of us can afford to use anyway LOL.
A lot of times, to save on the "real" Gatofeo if Im only gonna be shooting a little bit (sadly my MOST common shooting style lately!) I'll just mix up some Lard (unsalted!) and canning wax in a roughly 50\50 mix... Varying the mix a tad one way or the other depending on the season and outside temperature. In the rare event that I actually get to spend any real time at the range, I'll splurge on the real thing and an extra squirt or two of olive oil on the arbor or center pin just to keep things rolling along..
Hope this helps!