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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
220MK's
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<blockquote data-quote="Boyd Heaton" data-source="post: 21495" data-attributes="member: 67"><p><strong>Re: 220MK\'s</strong></p><p></p><p>Sealsniper.Group's are in the .5 inch range(5 shot's).My C.O.L was 3.655.You might want to try RL25 too.I got the same velocity with 91gr of RL25 that I did with 90gr of H1000.Start at 85gr of each and work up.Once you hit 3000fps keep a VERY CLOSE EYE ON THING'S.MINE did'nt start to show pressure until around 3050.Then it got bad in a hurry.Be safe and have fun.</p></blockquote><p></p>
[QUOTE="Boyd Heaton, post: 21495, member: 67"] [b]Re: 220MK\'s[/b] Sealsniper.Group's are in the .5 inch range(5 shot's).My C.O.L was 3.655.You might want to try RL25 too.I got the same velocity with 91gr of RL25 that I did with 90gr of H1000.Start at 85gr of each and work up.Once you hit 3000fps keep a VERY CLOSE EYE ON THING'S.MINE did'nt start to show pressure until around 3050.Then it got bad in a hurry.Be safe and have fun. [/QUOTE]
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