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I just chronographed some loads I worked up on Quickload for my 50 THUMPER. With 21.5 gr. of H110 and 690 Gr. FMJ 50 BMG bullets Quickload said velocity should have been 990 FPS. Actual velocity averaged 825 FPS. I adjusted the Long barrel friction setting to get the program to display the correct velocity and we will chronograph those tomorrow. Keep your fingers crossed.
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