Beeswax/Vaseline makes a very good bullet lube for both BP and smokeless powders.
I've used it to 2,200fps in a .45 and 2,000fps in a .50 (ctg. guns) with smokeless and up to 1,500fps with BP.
The Vaseline, a petroleum gelly shouldn't work, but it does and a LOT better than Paraffin.

All of my lube mixes with paraffin have failed, whereas the Beeswax/Val. in a 60:40 mix, works very well.

Also, SPG and Lyman's BP Gold also work well.

.58 pistol backup - cool!

A dry barrier between the lube and bullet might be a very good idea.
In BP ctg. when using a lube wad, I use a wax paper disk between the wad and the bullet.

Whatever goes between them, must not stick to the bullet, is all AS WELL AS presenting a flat surface to the bullet's base.

A 1/2" wad from Track (32 gauge?), or punched from gasket material, which is the vegatable fibre wad they sell I'm told, would work fine.

1/2" arch punch - cardbord, tablet backing - almost anything, flat and 1/2".

Best wishes

Daryl