I worked up two loads using my S&W Model 57 41 magnum.
1st load: Beartooth 250 gr LNF GC with H110 powder, magnum primers and mixed cases. Shot two-shot groups with 17.4 gr, 17.6 gr, 17.8 gr, 18.0 gr, 18.2 gr and 18.4 grains of H110 powder.
Two loads had touching holes, 17.6 gr and 18.2 gr at 15...