Good points there, Daryl.

Old Brit-try as is, with caveats as above .
you can otherwise try the wax (?BW)and 2 tsp of ATF.
Melted and whipped in a double boiler.
Depending on how gummy/sticky or dry you want it to be, add vaseline and and a couple of tsp 2T oil.
I'm guessing UK weather will need a wee bit of vaseline to that mix?
We want it a bit sticky.Not too dry to flake off the lube grooves...
GL

Perry:
Some people i know have used the regular UHT milk cartons for wad material.
I may use a milk carton wad/dental wax combo for 350-400 gr CB in my .404J.