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Rifles, Reloading, Optics, Equipment
Reloading
6mm/220 swift?
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<blockquote data-quote="Trickymissfit" data-source="post: 490594" data-attributes="member: 25383"><p>actually been done several times. The original case the Swift came out of was the 6mm Lee/Navy. Then there was the .240 Cobra, and maybe a couple others. Before I'd even faintly consider the three 6mm rounds you posted, I'd be looking at a 6mm Remington, or the improved version. The problem with the .284 case and the 30-06 case is that they are way overbore. You could ream the 6/.284 case about .150" short, and maybe loose 75 fps. Yet gain more than twice the barrel life. Another alternative is to use a 6mmAI reamer with a .243AI headspace gauge. You will then have a .243AI case with the better neck design of the 6mmAI. For dies you simply shorten a 6mmAI die, and run the reamer into a Forster seater sleeve. I shoot the 6/.250AI, and the difference between it and the .243AI is minimal. If speed is the issue, then a 6Vias is where you want to be (70 grain bullet at 4190 fps).</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 490594, member: 25383"] actually been done several times. The original case the Swift came out of was the 6mm Lee/Navy. Then there was the .240 Cobra, and maybe a couple others. Before I'd even faintly consider the three 6mm rounds you posted, I'd be looking at a 6mm Remington, or the improved version. The problem with the .284 case and the 30-06 case is that they are way overbore. You could ream the 6/.284 case about .150" short, and maybe loose 75 fps. Yet gain more than twice the barrel life. Another alternative is to use a 6mmAI reamer with a .243AI headspace gauge. You will then have a .243AI case with the better neck design of the 6mmAI. For dies you simply shorten a 6mmAI die, and run the reamer into a Forster seater sleeve. I shoot the 6/.250AI, and the difference between it and the .243AI is minimal. If speed is the issue, then a 6Vias is where you want to be (70 grain bullet at 4190 fps). gary [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
6mm/220 swift?
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