I've got a 180 gr 311291 mold for my O3A3.
I've got IMR 4350 (heard this is not a good powder for this), IMR 4831, and IMR 4895.
I think the 4895 is my best bet. Anyone have a any good safe recipes for any of these powders @ around 1800 to 1900 ft per sec? Can't find the other powders in my Lyman cast boolit book I just got on e-bay for this mold.
Thanks in advance.
Rich