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Rifles, Reloading, Optics, Equipment
Reloading
220 Swift AI
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<blockquote data-quote="Mike Matteson" data-source="post: 2788055" data-attributes="member: 101791"><p>I have a 220 swift for about 50yrs now. I-14 twist rate. I use 55gr bullets, generally Sierra. Moving at 3900fps with Fed 210 primers, and IMR 4064. I can see a faster twist barrel for heavier bullets. </p><p>The loads I am taking about are in older reloading manuals. </p><p>With going to much heavier bullet you may want to sept up to and AI chamber.</p><p>There isn't Peterson or Lapua brass out there. I don't know it they are even to going to build the 220 swift brass. They do built 22/250 brass in I believe Lapua. I got some for my son. </p><p>To get a little more push I would look at going to 22/250AI chamber. That should get you in the velocities, possible are looking for. The 22/250 was built as a none barrel barrel to take the place of the 220 swift. Also read a great many years ago if you slowed the 220 swift down under 4000fps, you got a longer lasting barrel. So that why I settle on a 55gr @ 3900fps. It seem to have work, but not for sure.</p></blockquote><p></p>
[QUOTE="Mike Matteson, post: 2788055, member: 101791"] I have a 220 swift for about 50yrs now. I-14 twist rate. I use 55gr bullets, generally Sierra. Moving at 3900fps with Fed 210 primers, and IMR 4064. I can see a faster twist barrel for heavier bullets. The loads I am taking about are in older reloading manuals. With going to much heavier bullet you may want to sept up to and AI chamber. There isn't Peterson or Lapua brass out there. I don't know it they are even to going to build the 220 swift brass. They do built 22/250 brass in I believe Lapua. I got some for my son. To get a little more push I would look at going to 22/250AI chamber. That should get you in the velocities, possible are looking for. The 22/250 was built as a none barrel barrel to take the place of the 220 swift. Also read a great many years ago if you slowed the 220 swift down under 4000fps, you got a longer lasting barrel. So that why I settle on a 55gr @ 3900fps. It seem to have work, but not for sure. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
220 Swift AI
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