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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
264 win mag
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<blockquote data-quote="CONatureBoy" data-source="post: 2201060" data-attributes="member: 118769"><p>I built a 264 Win Mag around the Berger 156-grain EOL bullet. The rifle is based on a blueprinted stainless-steel Rem. 700 action and a 26"/1:7.5" fluted stainless-steel Krieger barrel. Jewell trigger, Tubb firing pin, Night Force scope, etc. I load the EOL with Reloder 26 powder. Shoots the EOL just over 3,000 fps into under a half MOA. </p><p></p><p>I've seen in this forum claims of muzzle velocities of 3,100-3,200 fps for the same bullet and barrel length in this caliber. These sound like hot loads to me. For instance, QuickLoad predicts that 67.1 grains of H1000 pushes the same bullet out of a 26" barrel to 3,008 fps at maximum acceptable pressure. QuickLoad predicts that 70.0 grains of Retumbo maxes out pressure at 3,043 fps, but that's a modestly compressed load (101.2%), at the default COAL of 3.340". </p><p></p><p>The SAAMI-standard 264 Win Mag that came to market around 1960 was designed with a 26" barrel having 1:9" or 1:10" twist, and shooting 140-grain bullets at claimed factory-ammo velocities of 3,200 fps. That's roughly consistent with what QuickLoad predicts for current-generation bullets and powders. For example, 66.1 grains of Reloder 26 yields a predicted muzzle velocity of 3,164 fps for a Berger 140-grain VLD. In this sense at least, the 264 Win Mag was ahead of its time.</p><p></p><p>Brass is easy. If you don't want to buy 264 brass, find yourself some 7mm Rem Mag brass and neck it down. That's it.</p><p></p><p>I studied the ballistics of all of the 6.5s carefully before building a 264 Win Mag. Just make sure you build your rifle with a 1:7.5"- or 1:8"-twist barrel if you want to shoot bullets heavier than 140 grains. Otherwise, if you can tolerate about the same kick you'd get from a 7mm Rem Mag, this caliber is hard to beat.</p></blockquote><p></p>
[QUOTE="CONatureBoy, post: 2201060, member: 118769"] I built a 264 Win Mag around the Berger 156-grain EOL bullet. The rifle is based on a blueprinted stainless-steel Rem. 700 action and a 26"/1:7.5" fluted stainless-steel Krieger barrel. Jewell trigger, Tubb firing pin, Night Force scope, etc. I load the EOL with Reloder 26 powder. Shoots the EOL just over 3,000 fps into under a half MOA. I've seen in this forum claims of muzzle velocities of 3,100-3,200 fps for the same bullet and barrel length in this caliber. These sound like hot loads to me. For instance, QuickLoad predicts that 67.1 grains of H1000 pushes the same bullet out of a 26" barrel to 3,008 fps at maximum acceptable pressure. QuickLoad predicts that 70.0 grains of Retumbo maxes out pressure at 3,043 fps, but that's a modestly compressed load (101.2%), at the default COAL of 3.340". The SAAMI-standard 264 Win Mag that came to market around 1960 was designed with a 26" barrel having 1:9" or 1:10" twist, and shooting 140-grain bullets at claimed factory-ammo velocities of 3,200 fps. That's roughly consistent with what QuickLoad predicts for current-generation bullets and powders. For example, 66.1 grains of Reloder 26 yields a predicted muzzle velocity of 3,164 fps for a Berger 140-grain VLD. In this sense at least, the 264 Win Mag was ahead of its time. Brass is easy. If you don't want to buy 264 brass, find yourself some 7mm Rem Mag brass and neck it down. That's it. I studied the ballistics of all of the 6.5s carefully before building a 264 Win Mag. Just make sure you build your rifle with a 1:7.5"- or 1:8"-twist barrel if you want to shoot bullets heavier than 140 grains. Otherwise, if you can tolerate about the same kick you'd get from a 7mm Rem Mag, this caliber is hard to beat. [/QUOTE]
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