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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Win pre 64 gibbs rifles
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<blockquote data-quote="Turnbolt53" data-source="post: 1596319" data-attributes="member: 108264"><p>If the owner is an accomplished reloader, then there is no strong reason to go from 270 Gibbs to 280AI.</p><p></p><p>But the Gibbs cartridges all have the shoulder blown forward, and a very short neck. Properly forming the brass from 270Win brass requires necking up (usually 2 calibers), and then partially necking down to form a false shoulder to headspace on. Then the case is fireformed to set the shoulder forward to it's new location.</p><p></p><p>It's a fair amount of work, but results in a cartridge that has maximum case capacity for the 270 case.</p><p></p><p>The advantage of the 280AI is that you can buy 280AI factory ammo, or else fire 280Rem factory ammo in a pinch.</p><p></p><p>And of course, you get the high BC 7mm bullets with a 280AI. Twist it 8.</p></blockquote><p></p>
[QUOTE="Turnbolt53, post: 1596319, member: 108264"] If the owner is an accomplished reloader, then there is no strong reason to go from 270 Gibbs to 280AI. But the Gibbs cartridges all have the shoulder blown forward, and a very short neck. Properly forming the brass from 270Win brass requires necking up (usually 2 calibers), and then partially necking down to form a false shoulder to headspace on. Then the case is fireformed to set the shoulder forward to it's new location. It's a fair amount of work, but results in a cartridge that has maximum case capacity for the 270 case. The advantage of the 280AI is that you can buy 280AI factory ammo, or else fire 280Rem factory ammo in a pinch. And of course, you get the high BC 7mm bullets with a 280AI. Twist it 8. [/QUOTE]
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Win pre 64 gibbs rifles
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