I am using a Lee 124gr tumble lube mold TL356-124-2R with wheel weights. I have used titegroup (no leading poor accuracy), W231(horrible leading), and have just loaded some 800x but not tested. I am shooting out of Sig P-6's. I have used Unique with purchased bullets with good accuracy but lots of smoke, to the point I could not see the target. I have also considered getting a small electric oven and heat treating the bullets.