A question that I get fairly often about my homemade 50/50 beeswax/moly grease bullet lube is, "How cold can it get and this lube still flow through a lube-sizer?", and I've never really had what I consider to be a good answer. Well, this winter has seen to it that I now have a good answer. In the past, I have said that it's good down to about 30 degrees because I have lubed thousands of .44 and .45 Keith SWCs with this lube when my garage was in the mid to low 30s, with no problems whatsoever. Back in January, with my garage temperature in the 25-30 degree range, I tried to size/lube some 140 grain 6.5mm Loverin bullets, and had all kinds of problems. The lube was still flowing (albeit reluctantly), but it was stiff enough at those temperatures that there was a great deal of resistance to moving the center pin and get the bullet down into the sizer die, and bullets were getting bent and deformed in the process. My garage has now warmed up to 40 degrees, and these bullets sized/lubed very nicely indeed. So now when I get asked "How cold can it get and this lube still flow through a lube-sizer?", my answer is -- for short stumpy, stiff bullets, with one lube groove, down to about 30 degrees, for long, skinny, easily bent bullets with lots of lube grooves, down to about 40 degrees.
