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Message: <blockquote data-quote="Driller" data-source="post: 2566879" data-attributes="member: 25897"><p>When developing loads, particularly for long range shooting, muzzle velocity is good information.  During load development, knowing the speeds of the bullets (and therefore the average speed, standard deviation and extreme spread) will tell you how consistent your loads are.   Additionally, an accurate muzzle velocity is necessary for accurate ballistic calculations.   A 50 fps error in bullet speed will result in a point of impact error at 1000 yards of a couple of MOA depending on the atmospherics.  If the velocities of your reloads vary within a range of a 100 or so fps, it's going to be hard to get any consistency at range.</p></blockquote><p></p>