RE: BM3 +Shockwave 300s from an Omega
I would limit the upper level to 120gr. of Black Mag'3 with the 300gr. bullet. I was getting 2000fps with 100gr. of Black Mag'3 under a 300gr. bullet in a Harvester sabot. If you are going to shoot 200 yards at animals I hope you plan to practice a lot!!