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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5 140 Hornady SST
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<blockquote data-quote="Mysticplayer" data-source="post: 35356" data-attributes="member: 8947"><p>matt, be careful if trying to get 3000fps out of a 308 case. That requires some pretty fancy dancing with the pressure gods. Go with a bigger case.</p><p></p><p>The testing I did with my scope was during the sight in. Adjustments agreed with the amounts needed to bring sighting shots into target. Have also played with shooting the box and it shot within the accuracy of the shooter/rifle. As they say, close enough for gov't work.</p><p></p><p>The elevation was very close if not on 1/8" per click. The windage was more like 1/4" but that is not important here.</p><p></p><p>From what you have said, sounds like the SST's are hitting 1 to 3 MOA higher. That's significant and about what I would have suspected. Run that through a ballistics program and you will get some very interesting results. BC's are going to calculate well over 0.6, probably more like 0.8 or 0.9.</p><p></p><p>For hunting, the added security of the hunting construction ensures better on game performance. Would also be a bonus for those silhouette shooting. More dwell on those heavy steel targets.</p><p></p><p>A lightly constructed bullet will always show less denting on a steel gong even if impact ballistics are the same. More impact energy is lost as the bullet fragments.</p><p></p><p>I am very happy with the SST's and use them whenever I can. The only place I use the MK now is the 240gr and 300gr in my RUM's. Nothing else even comes close. Now that Sierra is getting out of the 240 bullet, I am sad.</p><p></p><p>Jerry</p></blockquote><p></p>
[QUOTE="Mysticplayer, post: 35356, member: 8947"] matt, be careful if trying to get 3000fps out of a 308 case. That requires some pretty fancy dancing with the pressure gods. Go with a bigger case. The testing I did with my scope was during the sight in. Adjustments agreed with the amounts needed to bring sighting shots into target. Have also played with shooting the box and it shot within the accuracy of the shooter/rifle. As they say, close enough for gov't work. The elevation was very close if not on 1/8" per click. The windage was more like 1/4" but that is not important here. From what you have said, sounds like the SST's are hitting 1 to 3 MOA higher. That's significant and about what I would have suspected. Run that through a ballistics program and you will get some very interesting results. BC's are going to calculate well over 0.6, probably more like 0.8 or 0.9. For hunting, the added security of the hunting construction ensures better on game performance. Would also be a bonus for those silhouette shooting. More dwell on those heavy steel targets. A lightly constructed bullet will always show less denting on a steel gong even if impact ballistics are the same. More impact energy is lost as the bullet fragments. I am very happy with the SST's and use them whenever I can. The only place I use the MK now is the 240gr and 300gr in my RUM's. Nothing else even comes close. Now that Sierra is getting out of the 240 bullet, I am sad. Jerry [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5 140 Hornady SST
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