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Hello, Back from the range today. I'm very happy with the results. Upped the powder charge to 105 grains of IMR 4831 with the same 160g Barnes bullet. ![]() Take a look at the individual readings. 1- 3531 fps 2- 3527 fps 3- 3527 fps 4- 3554 fps 5- 3527 fps 3533 fps ave = 3550 fps corrected to muzzle 11 fps sd 3 of the 5 readings were the same and the standard deviation was 11 fps. Primers were flat but no signs of excessive pressure. Looks like my prediction of 3700 fps may be attainable. 3-1/2" high at 100 yds = 4-1/2" low at 400 yds 4500 ft/lbs energy at the muzzle with 2050 ft/lbs remaining at 400 yds I forgot to mention, the muzzle brake on this rifle really works. Recoil is about the same as 308 win. ![]() |