I cast up a bunch for my .54, with a 32 twist. The first and second firing were reasonably accurate, but they do not carry enough lube for a third loading. If I used a grease cookie under the bullet then they had enough lube for a five shot group. With my fast twist rifling I had to limit my loads to 80 grains of 2F or the group opened to 8 inches at 60 yards. With 75 grains, the group size was 3 inches. The same gun loaded with Maxi ball projectiles turns in 2.7 inch groups at 70 yards with 90 grains of 2F. So I do not recommend the LEE REAL bullets.