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Rifles, Reloading, Optics, Equipment
Reloading
Are three shot groups valuable?
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<blockquote data-quote="Another Casual" data-source="post: 2574384" data-attributes="member: 89878"><p>3 shot groups can be useful for some things. The groups can't get smaller by adding shots. In a light rifle that heats up quickly it can save a significant amount of time at the range on a hot day. In a round where you need to cover a lot of ground between min and max charges it saves time and components. I accept that, like you, I'll need to make a second trip to investigate the areas of interest identified with the 3 shot group trip. </p><p></p><p>I have a heavy barreled 223 and I did 10 shot groups for load development. Reading the groups was a lot easier and you could see as the barrel came on and off a node. If I picked 3 random shots from each of those groups it would be easy to see how 3 shots together aren't helpful. </p><p></p><p>Let's say you shoot a 3 shot group and two are touching and one is way out there. Maybe it's a good load and you fudged the powder charge or bumped the seating die. Maybe the bullet is a factory reject. Maybe it's a terrible load and the two together were a fluke. One flier in a 10 shot group is easy to disregard, in a 3 shot group it's 33% of your data. </p><p></p><p>In short, a single hole 3 shot group MAY be a good load, a single hole 10 shot group IS a good load.</p></blockquote><p></p>
[QUOTE="Another Casual, post: 2574384, member: 89878"] 3 shot groups can be useful for some things. The groups can't get smaller by adding shots. In a light rifle that heats up quickly it can save a significant amount of time at the range on a hot day. In a round where you need to cover a lot of ground between min and max charges it saves time and components. I accept that, like you, I'll need to make a second trip to investigate the areas of interest identified with the 3 shot group trip. I have a heavy barreled 223 and I did 10 shot groups for load development. Reading the groups was a lot easier and you could see as the barrel came on and off a node. If I picked 3 random shots from each of those groups it would be easy to see how 3 shots together aren't helpful. Let's say you shoot a 3 shot group and two are touching and one is way out there. Maybe it's a good load and you fudged the powder charge or bumped the seating die. Maybe the bullet is a factory reject. Maybe it's a terrible load and the two together were a fluke. One flier in a 10 shot group is easy to disregard, in a 3 shot group it's 33% of your data. In short, a single hole 3 shot group MAY be a good load, a single hole 10 shot group IS a good load. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Are three shot groups valuable?
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