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Rifles, Reloading, Optics, Equipment
Reloading
Choice of long range test loads based on overall group size or vertical group size?
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<blockquote data-quote="Bart B" data-source="post: 835770" data-attributes="member: 5302"><p><strong>Re: Choice of long range test loads based on overall group size or vertical group siz</strong></p><p></p><p>All those groups are very good. But I don't think there's enough shots in each one for them to be meaningful as far as which load's best. I'd shoot at least 10 shots per group.</p><p></p><p>I'd ignore the smallest group shot with a given load. Use the largest one. A load's smallest groups happen only when all the variables cancel each other out or everything's perfect; but you cannot tell which it is. The largest groups happen when all the variables add up together and tell you the most you'll miss your point of aim.</p><p></p><p>If one shoots several groups with the same load and they're not all within 10% of the same size, there's not enough shots in them to be very meaningful as far as what accuracy can be counted on all the time with that load.</p><p></p><p>Shoot another few-shot group with the same load that produced the smallest one shown in this thread. If it's within 1% of the same size, then it may be the best load to use.</p><p></p><p>Vertical shot stringing dimensions are often best for load testing at the longer ranges. Especially if there's a variable cross wind. Shooting shoulder fired rifles from a bench with the rifle's fore end resting atop something typically produces greater horizontal shot stringing than when the rifle's fired from prone with a sling properly used and the fore end resting on something.</p></blockquote><p></p>
[QUOTE="Bart B, post: 835770, member: 5302"] [b]Re: Choice of long range test loads based on overall group size or vertical group siz[/b] All those groups are very good. But I don't think there's enough shots in each one for them to be meaningful as far as which load's best. I'd shoot at least 10 shots per group. I'd ignore the smallest group shot with a given load. Use the largest one. A load's smallest groups happen only when all the variables cancel each other out or everything's perfect; but you cannot tell which it is. The largest groups happen when all the variables add up together and tell you the most you'll miss your point of aim. If one shoots several groups with the same load and they're not all within 10% of the same size, there's not enough shots in them to be very meaningful as far as what accuracy can be counted on all the time with that load. Shoot another few-shot group with the same load that produced the smallest one shown in this thread. If it's within 1% of the same size, then it may be the best load to use. Vertical shot stringing dimensions are often best for load testing at the longer ranges. Especially if there's a variable cross wind. Shooting shoulder fired rifles from a bench with the rifle's fore end resting atop something typically produces greater horizontal shot stringing than when the rifle's fired from prone with a sling properly used and the fore end resting on something. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Choice of long range test loads based on overall group size or vertical group size?
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