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Rifles, Reloading, Optics, Equipment
Reloading
Problem with Swift 30 Caliber 150 Sciroccos
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<blockquote data-quote="Rustystud" data-source="post: 867701" data-attributes="member: 9964"><p>For a number of years I have used Swift Scirocco II in several rifles of different calibers, 90 grain in .243 Win, 130 grain in .277 Win, 150 grain in .308 Win and 30-06 Springfield, and 180 grain in .300 Win Mag.</p><p> </p><p>Twice in the last 5 years I have developed a sub half minute load with 150 Swift Sciroccos to have the load to fall apart into a multi minute loads. This has happen with the same rifle. First with a factory barrel then with a custom barrel. The last time I switched scopes, stocks, triggers, etc. to no avail. Then switched bullets (B<strong>arnes Tipped XXX) </strong>and the gun started grouping sub .3 moa.</p><p> </p><p>The first lot of Scirocco bullets was W080. I found that ten randomly selected bullets varied as much as .06" of and inch and varied in weight as much as 4.6 grains. Another shocking feature was the bearing surface was .308 in the front and .3065" in the back of the bearing surface, in front of the boat tail.</p><p> </p><p>I looked at a second lot W880 and the variables were not much better.</p><p> </p><p>Just for S__t and giggles I took 10 of the Barnes Tipped 150 grain XXX and they all measured with in a .1 of a grain and within .01" of and inch in length.</p><p> </p><p>Either the Quality control or the bullets standards at Swift Bullet Company are not good enough to warrant their use in long range.</p><p> </p><p>I have only experienced this with 150 Grain 30 caliber bullets. The 180 grain 30 caliber are shooting .3sub Moa.</p><p> </p><p>Nat Lambeth</p></blockquote><p></p>
[QUOTE="Rustystud, post: 867701, member: 9964"] For a number of years I have used Swift Scirocco II in several rifles of different calibers, 90 grain in .243 Win, 130 grain in .277 Win, 150 grain in .308 Win and 30-06 Springfield, and 180 grain in .300 Win Mag. Twice in the last 5 years I have developed a sub half minute load with 150 Swift Sciroccos to have the load to fall apart into a multi minute loads. This has happen with the same rifle. First with a factory barrel then with a custom barrel. The last time I switched scopes, stocks, triggers, etc. to no avail. Then switched bullets (B[B]arnes Tipped XXX) [/B]and the gun started grouping sub .3 moa. The first lot of Scirocco bullets was W080. I found that ten randomly selected bullets varied as much as .06" of and inch and varied in weight as much as 4.6 grains. Another shocking feature was the bearing surface was .308 in the front and .3065" in the back of the bearing surface, in front of the boat tail. I looked at a second lot W880 and the variables were not much better. Just for S__t and giggles I took 10 of the Barnes Tipped 150 grain XXX and they all measured with in a .1 of a grain and within .01" of and inch in length. Either the Quality control or the bullets standards at Swift Bullet Company are not good enough to warrant their use in long range. I have only experienced this with 150 Grain 30 caliber bullets. The 180 grain 30 caliber are shooting .3sub Moa. Nat Lambeth [/QUOTE]
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Problem with Swift 30 Caliber 150 Sciroccos
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