I gave up trying to find mutton tallow. I even gave up trying to find some mutton fat and rendering my own tallow from it (directions found on the web). So, I bought some lard (as one on-line resource called it, pig tallow), some bee's wax and paraffin and made some modified Gatofeo's lube. I haven't been able to find anything that compared and/or contrasted lard with mutton tallow, so we'll see soon enough. The stuff looks like it should work. I'm waiting on my order of felt from Duro-felt, and as soon as it get's here, I'll make some wads and see how it works.
Anyone try to make the lube with lard? How'd it work out?