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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Which caliber 257 or 264 ?
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<blockquote data-quote="Long Time Long Ranger" data-source="post: 335527" data-attributes="member: 505"><p>The 264 win mag is the same case as the 7mm rem mag. Both of these outperform the 270 winchester. My 257 wby shoots a 100 grain Barnes TSX at 3780 fps. It is incredibly flat and fun to shoot out to about 600 yards. It has blown right through everything we have shot it at and this includes a 550 pound caribou at 486 yards. Beyond that the 264 win mag or STW with a 130 grain swift scirroco .571 BC takes over. The 264 STW shooting this bullet at over 3500 fps is awesome at long range and the 257 wby can't keep up there because of the poor BC 25 cal bullets. Inside 600 yards I would do the 257 wby. If you plan on shooting beyond that then do the 264 STW. The 264 win mag is a little easier on the barrel but not quite as fast so take your pick there. Without modifying your bolt face the 264 gibbs will virtually duplicate the 264 win mag. Within a 100 fps anyway. The 257 gibbs is also a very good one. The 264 and 257 on the JRS design are tops on your bolt face. It is all you can get out of a 280 case which gives you a bit more than the blown out '06 case. I think Pac-Nor can do these. This would get you very close to the 264 win mag on your bolt face. I like the JRS design over the Gibbs because of the short neck (.25") on the Gibbs. The JRS design gives you the same case capacity with a longer neck with the longer 280 parent case.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 335527, member: 505"] The 264 win mag is the same case as the 7mm rem mag. Both of these outperform the 270 winchester. My 257 wby shoots a 100 grain Barnes TSX at 3780 fps. It is incredibly flat and fun to shoot out to about 600 yards. It has blown right through everything we have shot it at and this includes a 550 pound caribou at 486 yards. Beyond that the 264 win mag or STW with a 130 grain swift scirroco .571 BC takes over. The 264 STW shooting this bullet at over 3500 fps is awesome at long range and the 257 wby can't keep up there because of the poor BC 25 cal bullets. Inside 600 yards I would do the 257 wby. If you plan on shooting beyond that then do the 264 STW. The 264 win mag is a little easier on the barrel but not quite as fast so take your pick there. Without modifying your bolt face the 264 gibbs will virtually duplicate the 264 win mag. Within a 100 fps anyway. The 257 gibbs is also a very good one. The 264 and 257 on the JRS design are tops on your bolt face. It is all you can get out of a 280 case which gives you a bit more than the blown out '06 case. I think Pac-Nor can do these. This would get you very close to the 264 win mag on your bolt face. I like the JRS design over the Gibbs because of the short neck (.25") on the Gibbs. The JRS design gives you the same case capacity with a longer neck with the longer 280 parent case. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Which caliber 257 or 264 ?
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