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Rifles, Reloading, Optics, Equipment
Reloading
What causes horizontal spread
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<blockquote data-quote="MagnumManiac" data-source="post: 1109038" data-attributes="member: 10755"><p>Horizontal spread can be difficult to diagnose in a no wind situation, but, how you hold the rifle can influence this. Even though a rifle stock appears very stiff, they do move with pressure applied to them.</p><p>I only touch the rifle with my shooting hand, this reduces barrel harmonic changes. Some rifles will pull left or right due to how much pressure you're using to pull the rifle into your shoulder. Some will change POI just from the stock being on the bag in a different spot. My F-Class stock will change POI if the stock isn't against the stop.</p><p>When testing for groups, I use a shooting pad, and let the rifle recoil freely with little pressure from my shooting hand. </p><p>Others may think differently, but I've found composite stocks to resonate and I think this influences POI shifts to a small extent. Even with alloy bedding blocks, a skim bed never hurts and can lessen resonating influences to the barrel. Metal 'sings' and resonates, and it is this oscillation that changes POI, anything you can do to lessen this and keep it consistent, such as tuning seating depth, then cheek weld and shooting technique will give better precision, because that's what we're trying to achieve.</p><p></p><p>Cheers.</p><p>gun)</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1109038, member: 10755"] Horizontal spread can be difficult to diagnose in a no wind situation, but, how you hold the rifle can influence this. Even though a rifle stock appears very stiff, they do move with pressure applied to them. I only touch the rifle with my shooting hand, this reduces barrel harmonic changes. Some rifles will pull left or right due to how much pressure you're using to pull the rifle into your shoulder. Some will change POI just from the stock being on the bag in a different spot. My F-Class stock will change POI if the stock isn't against the stop. When testing for groups, I use a shooting pad, and let the rifle recoil freely with little pressure from my shooting hand. Others may think differently, but I've found composite stocks to resonate and I think this influences POI shifts to a small extent. Even with alloy bedding blocks, a skim bed never hurts and can lessen resonating influences to the barrel. Metal 'sings' and resonates, and it is this oscillation that changes POI, anything you can do to lessen this and keep it consistent, such as tuning seating depth, then cheek weld and shooting technique will give better precision, because that's what we're trying to achieve. Cheers. gun) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
What causes horizontal spread
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