Originally Posted By AeroE:
I didn't look up the charge weight range for IMR 4198, but that is one gunpowder I don't like much due to the long grains and poor metering. There's a pound downstairs and when it's gone I won't get more.
In my Speer #10 I have handy 20.0 grs of IMR-4198 is the starting load with a 55 gr bullet.
19.0 grs is start in Lyman #49.
So no problems with that powder charge.
Myself I like to load 223 with slower powders, BLC2, Tac, IMR-3031, IMR-4895, Re15 ect.
Moly coated bullet is ok if that's all you have, or you want to shoot Moly only.