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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Capable of...When I do my part...?
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<blockquote data-quote="Timnterra" data-source="post: 1706113" data-attributes="member: 55944"><p>I remember reading an article a few years back by a guy with a laboratory day job. He stated something very similar to the topic at had. That most guns do not shoot as they are advertised to and we often blame the shooter as a way to make our gun seem better than it is. That article talked of shooting 20-50 round groups instead of three round groups. He showed the phenomenon by stacking multiple three round groups on top of each other. Within the 25, or so, three round groups there were several that were smaller than .5 moa. Several that fell over 1 moa and the majority were in between. The groups could be charted as a bell curve with the 80th percentile being the more accurate representation of the rifles potential. The wishful thinker would automatically claim the smallest group as the rifles true potential and blame the other 24 groups on "not doing his part." The reality is that precision is always about averages and the true potential is the average, not what lies on the extreme ends of the bell curve. The most useful segment of that article was the writer's determination that what matters most is group orientation not group size. Namely, the average distance from center of each shot means more to the long range hunter than average group size. I've shot lots of tiny groups and in the midst of the firing string thought that I pulled one, but when I looked at the Target the group was fantastic. I've Alice shot unimpressive groups knowing that I broke every shot clean. The only way that I can account for that is in the statistics. It is and always will be about averages.</p></blockquote><p></p>
[QUOTE="Timnterra, post: 1706113, member: 55944"] I remember reading an article a few years back by a guy with a laboratory day job. He stated something very similar to the topic at had. That most guns do not shoot as they are advertised to and we often blame the shooter as a way to make our gun seem better than it is. That article talked of shooting 20-50 round groups instead of three round groups. He showed the phenomenon by stacking multiple three round groups on top of each other. Within the 25, or so, three round groups there were several that were smaller than .5 moa. Several that fell over 1 moa and the majority were in between. The groups could be charted as a bell curve with the 80th percentile being the more accurate representation of the rifles potential. The wishful thinker would automatically claim the smallest group as the rifles true potential and blame the other 24 groups on “not doing his part.” The reality is that precision is always about averages and the true potential is the average, not what lies on the extreme ends of the bell curve. The most useful segment of that article was the writer’s determination that what matters most is group orientation not group size. Namely, the average distance from center of each shot means more to the long range hunter than average group size. I’ve shot lots of tiny groups and in the midst of the firing string thought that I pulled one, but when I looked at the Target the group was fantastic. I’ve Alice shot unimpressive groups knowing that I broke every shot clean. The only way that I can account for that is in the statistics. It is and always will be about averages. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Capable of...When I do my part...?
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