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Rifles, Reloading, Optics, Equipment
Reloading
Temp sensitivity of powders
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<blockquote data-quote="eddybo" data-source="post: 228568" data-attributes="member: 7194"><p>Groups open as it is akin to increasing or decreasing your powder charge, you just fall out of tune. </p><p> </p><p>In some rifles the load window is a little broader than others, which may mask temp senstivity, and cause the group to elevate. The converse is also true. </p><p> </p><p>I have a rifle that has a very narrow load window when shot in a lower velocity node. Just a few degrees in temp or a slight humidity change and groups go haywire. When the same gun is run at a higher node it is much more stable. The bad part of that scenerio is that the gun groups best at the lower accuracy node<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite4" alt=":mad:" title="Mad :mad:" loading="lazy" data-shortname=":mad:" /> I have a 28gr or so load for that rifle that is amazing or terrible depending on conditions. I also have a 31gr load that just shoots pretty good, but is almost always basically in tune.</p></blockquote><p></p>
[QUOTE="eddybo, post: 228568, member: 7194"] Groups open as it is akin to increasing or decreasing your powder charge, you just fall out of tune. In some rifles the load window is a little broader than others, which may mask temp senstivity, and cause the group to elevate. The converse is also true. I have a rifle that has a very narrow load window when shot in a lower velocity node. Just a few degrees in temp or a slight humidity change and groups go haywire. When the same gun is run at a higher node it is much more stable. The bad part of that scenerio is that the gun groups best at the lower accuracy node:mad: I have a 28gr or so load for that rifle that is amazing or terrible depending on conditions. I also have a 31gr load that just shoots pretty good, but is almost always basically in tune. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Temp sensitivity of powders
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