My RCBS seating plug designed for WC and SWC is leaving an aggravating ring about 3/32 below the flat point on my new Lee 358-158 RNFP's. I'm using an old RCBS 38Spl die set with the smaller diameter seating plug threads so getting replacement/different plugs are a hassle.
So. . . if I were to buy a new set of 357 dies, which one has the correct plug to seat this boolit without causing this ring? Does the "cowboy" dies from RCBS have a different plug especially designed for RNFP's? (also, I assume it's sizer is carbide?).