I originally started with RL25. I couldn't get it to shoot under 1/3/4" with the 25. I tried RL19,22,25. N160,165,560 WMR, H4831 and h870. The 19 "seemed" most consistent for this rifle. I haven't been able to find any retumbo, or h1000. Have a hard time getting powders in Alaska. When...