This week end I ran through my first 50 reloads of 45 Colt. They were 7.3 grains of Unique (Lee Red 052 Dipper) with 250 grain RNFP cast.
They shot well but, on each half of the outside of the case is got a pretty wide soot streak.
Is this normal for Unique or should I be trying for a tighter crimp?