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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Remington 700 long range.
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<blockquote data-quote="Bart B" data-source="post: 1138817" data-attributes="member: 5302"><p>MudRuner,</p><p></p><p>I thought I explained pretty good why firearm's muzzles don't point to the same place it was at on target when the firing pin strides the primer compared to where it points when the bullet leaves the barrel. The firearm moves and twists in all directions while the bullet goes down the barrel depending on how it's held and built. If the front sight on a 24" barrel moves in any direction only.008" while the rear receiver sight stays in place as the bullet goes down the barrel, the bullet will strike 1 MOA away from where it would had the front sight stayed in place.</p><p></p><p>I've best demonstrated this teaching folks to shoot rifles slung up in prone. Once they've got a good zero keeping their front elbow in place on the ground and calling shots very good, I have them move their front elbow 2 inches to the left. Most are surprised to see their next shot go 1 MOA or more to the right of where they called it. The external pressure on the stock forend is now at a different angle and force; that changes how the rifle moves in recoil. I've also shown how shots string in elevation by how high or low the rifle buttplate is positioned on their shoulder.</p><p></p><p>That's the best proof that the rifle twists and pivots in recoil while the bullet is still in the barrel. Second best is showing people that their zeros from standing, sitting and prone will be 1 to 2 MOA to the left of a zero obtained sitting at a bench holding onto a rifle resting on bags.</p><p></p><p>Nobody feels the difference these small changes make in where the barrel points. They see their shots not going to where they called it.</p></blockquote><p></p>
[QUOTE="Bart B, post: 1138817, member: 5302"] MudRuner, I thought I explained pretty good why firearm's muzzles don't point to the same place it was at on target when the firing pin strides the primer compared to where it points when the bullet leaves the barrel. The firearm moves and twists in all directions while the bullet goes down the barrel depending on how it's held and built. If the front sight on a 24" barrel moves in any direction only.008" while the rear receiver sight stays in place as the bullet goes down the barrel, the bullet will strike 1 MOA away from where it would had the front sight stayed in place. I've best demonstrated this teaching folks to shoot rifles slung up in prone. Once they've got a good zero keeping their front elbow in place on the ground and calling shots very good, I have them move their front elbow 2 inches to the left. Most are surprised to see their next shot go 1 MOA or more to the right of where they called it. The external pressure on the stock forend is now at a different angle and force; that changes how the rifle moves in recoil. I've also shown how shots string in elevation by how high or low the rifle buttplate is positioned on their shoulder. That's the best proof that the rifle twists and pivots in recoil while the bullet is still in the barrel. Second best is showing people that their zeros from standing, sitting and prone will be 1 to 2 MOA to the left of a zero obtained sitting at a bench holding onto a rifle resting on bags. Nobody feels the difference these small changes make in where the barrel points. They see their shots not going to where they called it. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Remington 700 long range.
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