Thus far been happy with my 1874 Sharps 45-70 consistiency. Im loading the 535 Postel and 67gr (weight) of Swiss 1.5F. would like some feedback about what aspect of the load to tune next. I can't really increase the powder charge as my bullet is just about touching the lands with a .030" poly wad. Im a little hesitant to drop my charge as i need that velocity for 600 yds.