Does anybody have a favorite powder for this combo? My problem arose when I went hunting with a 220 grain partition, that was a perfect choice.....on paper (up to 450 yards). The recovered bullet(s) from the black bear was far from what I expected, as were the number of shots to drop him. I've shot blackies with my .270 factory ammo with better results. So I went back to the drawing board, threw the partition out and went looking at the Accubond and the Barnes TSX.
My problem: I'm stuck on making the 200 grain Accubond fly nicely. The reasoning: Balisitic charts show the 200 grain to have around 2600 ft/lbs of energy at 300 yards, and still moving at 2425 fps. It can reach out to 500 yards before loosing minimum recommendations for the accubond. The 180 grain, and the 220 grain fall short after 325 yards or so.
I've tried the most accurate powder (IMR7828) from the Nosler Reloading guide 6, and walked away from the range ready to give up. Since then I've tried the RL-19 (1" 1/2) groups at 100 yds. The RL-22 at max produced the best results with 1/2 group at 100, but it produces a slight sticky bolt, case is fine. With the RL-22, when I drop back on the load...i'm back to an inch and 1/2 groupings.
My next try at powder is the Magpro by Accurate. Has anybody used this powder or have a favorite powder that I haven't tried? Tired of throwing money at this, but am determined to make this pig fly!