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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
220 Swift Improved?????
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<blockquote data-quote="Kevin" data-source="post: 69018" data-attributes="member: 603"><p>srhaggerty,</p><p>My barrel has had a lot of regular 220 swift shot through it with 50-55gr bullets and also a lot of 220AI with a mix of 40 50 52 and 55gr bullets. I really do not know which combination caused the most harm. The gun actually still shoots OK the problem is that I have the bullets seated as shallow as possible to get close to the lands. The 40's actually are not close they have about .1in freebore. Naturally the 40gr has the most powder. But if you did back it off to 4300 it would burn almost the same ammount of powder as the 55gr load. The same ammount of powder along with a smaller bullet should cause a little less damage than with the 55's. Case life would be very long thats for sure.</p></blockquote><p></p>
[QUOTE="Kevin, post: 69018, member: 603"] srhaggerty, My barrel has had a lot of regular 220 swift shot through it with 50-55gr bullets and also a lot of 220AI with a mix of 40 50 52 and 55gr bullets. I really do not know which combination caused the most harm. The gun actually still shoots OK the problem is that I have the bullets seated as shallow as possible to get close to the lands. The 40's actually are not close they have about .1in freebore. Naturally the 40gr has the most powder. But if you did back it off to 4300 it would burn almost the same ammount of powder as the 55gr load. The same ammount of powder along with a smaller bullet should cause a little less damage than with the 55's. Case life would be very long thats for sure. [/QUOTE]
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220 Swift Improved?????
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