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Rifles, Reloading, Optics, Equipment
Reloading
bullet seating depth for 7mm rem mag
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<blockquote data-quote="Rustystud" data-source="post: 288588" data-attributes="member: 9964"><p>There is no absolute rule but some say Tangent Ojive bullets tent to like to be jamed and Secant Ojive bullets like to jump.</p><p> </p><p>The manufactures of Barnes and Swift Sciroccos say they both need a jump to prevent an excessive preseure spike.</p><p> </p><p>In older days one of the things we tried not to encounter was a bimodel presure curve. Thoughts were that it caused irratic groups.</p><p> </p><p>It has been my experience that Berger Bullets shot better toughing or into the rifling a few thousands and Sierras liked to jump about .003.</p><p> </p><p>I am getting ready to to work over a 7mm Magnum for a customer. It is a Remington 700 Sendaro. I have adjusted the trigger down to 1 pound. It is in a HS Precision stock and has an aluminum bedding block. I will glass in the lug to further stabilize the action. The crown will be cleaned up to remove any doubt. I will test with Nosler Balistic Tips because they are cheap and usually are easy to get to group. If I can get it shooting well I will change over to Accubonds or a more serious controlled expansion round. I will start with som conservative loads and work up to a hotter round .5 grains at a time. I would expect to find a accuracy node around 3100 fps.</p><p> </p><p>Nat Lambeth</p></blockquote><p></p>
[QUOTE="Rustystud, post: 288588, member: 9964"] There is no absolute rule but some say Tangent Ojive bullets tent to like to be jamed and Secant Ojive bullets like to jump. The manufactures of Barnes and Swift Sciroccos say they both need a jump to prevent an excessive preseure spike. In older days one of the things we tried not to encounter was a bimodel presure curve. Thoughts were that it caused irratic groups. It has been my experience that Berger Bullets shot better toughing or into the rifling a few thousands and Sierras liked to jump about .003. I am getting ready to to work over a 7mm Magnum for a customer. It is a Remington 700 Sendaro. I have adjusted the trigger down to 1 pound. It is in a HS Precision stock and has an aluminum bedding block. I will glass in the lug to further stabilize the action. The crown will be cleaned up to remove any doubt. I will test with Nosler Balistic Tips because they are cheap and usually are easy to get to group. If I can get it shooting well I will change over to Accubonds or a more serious controlled expansion round. I will start with som conservative loads and work up to a hotter round .5 grains at a time. I would expect to find a accuracy node around 3100 fps. Nat Lambeth [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
bullet seating depth for 7mm rem mag
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