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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Freebore in a hunting rifle.
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<blockquote data-quote="J E Custom" data-source="post: 503366" data-attributes="member: 2736"><p>All modern high pressure rifles have some freebore not just the Weatherbys.</p><p></p><p>In order to reach higher velocities manufactures have added more freebore to </p><p>reduce pressure with greater powder volumes, and velocity sells.</p><p></p><p>This is an old debate and you are likely to hear all sorts of things about freebore length</p><p>and diameter.</p><p></p><p>There are many things can make a rifle shoot badly and freebore is not one of them if the </p><p>chamber is correctly done.</p><p></p><p>If you shorten the freebore you will lose velocity and gain pressure. This is the reason that </p><p>you should not shoot factory Weatherby ammo in a little or no freebore chamber. (IT</p><p>will be very hot and possibly blow the primers).</p><p></p><p>If you shorten the freebore you give up the velocity that led you to that cartridge in the first </p><p>place.</p><p></p><p>It is common for a well chambered (Factory SAMMI reamer)Weatherby cartridge in a custom </p><p>barrel to shoot less that 1/2 moa and in most cases 1/4 MOA.</p><p></p><p>I would recommend that you stay with the standard reamer and not create more problems</p><p>for your self.</p><p></p><p>Just my opinion.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 503366, member: 2736"] All modern high pressure rifles have some freebore not just the Weatherbys. In order to reach higher velocities manufactures have added more freebore to reduce pressure with greater powder volumes, and velocity sells. This is an old debate and you are likely to hear all sorts of things about freebore length and diameter. There are many things can make a rifle shoot badly and freebore is not one of them if the chamber is correctly done. If you shorten the freebore you will lose velocity and gain pressure. This is the reason that you should not shoot factory Weatherby ammo in a little or no freebore chamber. (IT will be very hot and possibly blow the primers). If you shorten the freebore you give up the velocity that led you to that cartridge in the first place. It is common for a well chambered (Factory SAMMI reamer)Weatherby cartridge in a custom barrel to shoot less that 1/2 moa and in most cases 1/4 MOA. I would recommend that you stay with the standard reamer and not create more problems for your self. Just my opinion. J E CUSTOM [/QUOTE]
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Freebore in a hunting rifle.
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