I bought a Pedersoli Sharps a few months back in 45-90 with a 34" barrel. I have tried various bullets with SPG lube in 20 to1 and 30 to 1, but I keep getting leading in the last few inches of the barrel. I am only using in the 75 grs. range of goex 2f powder, so I'm keeping in the 1200-1300 fps. I also do not get a lube star at the muzzle. Is there a bullet mold that holds more lube than norm? Is there better lube than SPG for this problem? The Sharps shoots very well for about the first five rounds after cleaning and then starts to degrade do to the leading. Open to any ideas that would help.