Hello, everyone.  I have just obtained some nice lamb kidney fat..this will be rendered into tallow.
  Not wanting to re-invent the wheel, I was wondering for B.P. grease cookies, if using straight tallow would work..I plan on using a 1/32" dental beeswax wad over powder charge & G.W. on top of this, to prevent powder contamination.  I am hoping that when the "big light" comes on. everything will be vaporized & combine with powder fouling to soften..so don't want any "hardeners" like beeswax.
   Was thinking of perhaps adding castor, neats foot, or jo-joba oil?  I have been using SPG as both lube & G.C. Looking for something homemade. Thanks!