Hey guys,
Just finished shooting 25 rounds loaded with the lyman 525 (actual weight was 505 gr) grain pure lead slug out of my winchester 1300 rifled deer barrel. My load was 42 grains of blue dot and a WAA12R wad, seated with around 40 lbs of pressure. This load managed 4" groups off shooting sticks, and 2" groups from a solid bench rest at 50 yards. Not too bad I guess for my first ever batch of cast bullets.
Next batch is going to be using a downrange WAA12F114 clone and universal powder.