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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger Load for 260
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<blockquote data-quote="LouBoyd" data-source="post: 635143" data-attributes="member: 9253"><p>That looks like a good load though I prefer to keep bullet shanks in front of the case shoulder. </p><p></p><p>According to Quickload</p><p>Input:</p><p>Cartridge 260 Rem</p><p>Barrel 22" </p><p>Bullet 130 Berger VLD </p><p>COAL 2.840" </p><p>Powder 38.5grain Varget</p><p></p><p>Calculated:</p><p>Shank seating depth .369" (about 0.1" behind the neck shoulder junction) </p><p>peak pressure 56977 psi. (94% SAAMI max a bit warm) </p><p>case fill 93.5% (good) </p><p>Muzzle velocity 2730 fps (good)</p><p>muzzle pressure 9676 psi (reasonable for a 22" barrel)</p><p></p><p>And per Quicktarget at 1000 yards at sea level STP it should give</p><p>Velocity 1446 fps </p><p>Energy 603 ft lbs</p><p>Time of flight 1.52 sec</p><p>total drop below bore line 364"</p><p>10 mph crosswind deflection 73.6"</p><p></p><p>If you chronograph it please post velocities and SDs. It would also be interesting how it groups at 1000 yards. It's still well supersonic at that distance.</p></blockquote><p></p>
[QUOTE="LouBoyd, post: 635143, member: 9253"] That looks like a good load though I prefer to keep bullet shanks in front of the case shoulder. According to Quickload Input: Cartridge 260 Rem Barrel 22" Bullet 130 Berger VLD COAL 2.840" Powder 38.5grain Varget Calculated: Shank seating depth .369" (about 0.1" behind the neck shoulder junction) peak pressure 56977 psi. (94% SAAMI max a bit warm) case fill 93.5% (good) Muzzle velocity 2730 fps (good) muzzle pressure 9676 psi (reasonable for a 22" barrel) And per Quicktarget at 1000 yards at sea level STP it should give Velocity 1446 fps Energy 603 ft lbs Time of flight 1.52 sec total drop below bore line 364" 10 mph crosswind deflection 73.6" If you chronograph it please post velocities and SDs. It would also be interesting how it groups at 1000 yards. It's still well supersonic at that distance. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger Load for 260
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