popper, I lost about 50 to 75 fps in my 41 mag going from wax based lube to HT.
On the light powder that comes out of the bore of the rifles Hi-Tek said this is the coating that has burned due to friction, but does not come off the boolit until it exits the bore.
I have found that a much harder boolit is needed when the velocity gets over 2,500 fps in the 223 Rem and about 2,300 fps in the 30-06.
I'm going to do some more experimenting with the H-T coating, my wax type lube mixture, and LBT Blue Soft. Also going to use 2 coats of HT just a little thicker to try and keep some of my BHN in the boolits.
I noticed my old toaster oven was having a hard time getting to 375 degrees yesterday so went shopping today at Goodwill and the Thrift stores. Found a convection oven at a thrift store near my house for $4.00. It has 2 grates and is digital! Will try it out after I get some more hardware cloth to cover the grates with.