One thing I wish had been done to the power wheel of the Sumatra's would be to put a range of numbers going from low power 0-18 high power. We should not have to count clicks.Steveoh
Here's one method I've used. "With Kodiaks, I found the best accuracy at about 900-930 FPS. (It was actually more accurate with EunJins, but for this test I used Kodiaks because I had a ton of them.) I set the wheel to 8-clicks from full-power where it was shooting 929 FPS. On shot 9 it dropped to 897 FPS so I clicked it up to 7 clicks from Full-Power and it jumped to 940 FPS on shot 10. With this method I got 30 shots in the 900-940 range. Sumatra 2500 500cc .25 Rifle 2/1/2010 3,000 PSI Fill 1 30.6 929 58.6 8 clicks from Full Power 2 30.6 930 58.8 3 30.6 932 59.0 4 30.6 921 57.6 5 30.6 918 57.3 6 30.6 915 56.9 7 30.6 911 56.4 8 30.6 911 56.4 9 30.6 897 54.7 10 30.6 940 60.1 7 clicks from Full Power 11 30.6 930 58.8 12 30.6 926 58.3 13 30.6 919 57.5 14 30.6 910 56.3 15 30.6 912 56.5 16 30.6 896 54.6 17 30.6 937 59.7 6 Clicks from Full Power 18 30.6 930 58.8 19 30.6 923 57.9 20 30.6 917 57.1 21 30.6 903 55.4 22 30.6 932 59.0 5 Clicks from Full Power 23 30.6 931 58.9 24 30.6 925 58.1 25 30.6 919 57.3 26 30.6 916 57.0 27 30.6 903 55.4 2050 PSI 28 30.6 919 57.4 4 Clicks from Full Power 29 30.6 914 56.8 30 30.6 913 56.7 31 30.6 899 54.9 2000 PSI 32 30.6 912 56.5 3 Clicks from Full Power 33 30.6 895 54.4 34 30.6 915 56.8 2 Clicks from Full Power 35 30.6 891 53.9 36 30.6 894 54.4 1 Click from Full Power 37 30.6 891 53.9 Full Power 38 30.6 883 53.0 1750 PSI "Another method I use with H&N Barracudas is to start on the green dot (at a 3k fill), shoot 6 shots (1 mag), then click up one. Click up one after every 6 shots. There are many variations. When you get to know your rifle you'll figure it out.