The bullet lubricant choice of champions, SPG Bullet Lube was developed by three-time NRA Black-Powder Cartridge Silhouette Champion Steve Garbe. SPG will reduce bore fouling and prolong shooting between cleanings in both black powder and smokeless powder firearms.
I used this lube for .357 Magnum and .45 LC loaded with Triple 7 powder and they work great . The lube reduce fouling and I was able to fire 50 rounds each from both caliber. The only complain was that I was not able to use the technique recommend by SPG to lube the bullet in batch ( put the lube in glass jar and dip in boiling water and pour the lube on the bullet and let them cool before removing the bullet from the tray -some how the lube will not stick to the bullets ) I just applied the lube into each bullet by smear them on the lube groove .