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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
fastest barrel manufacturer
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<blockquote data-quote="Oliveralan" data-source="post: 470573" data-attributes="member: 20245"><p>What also makes a big difference is throat lead angle. A 3/4 degree or 5/8 degree lead with flatten the pressure curve slightly and can add another 75fps generally, sometimes more.</p><p></p><p>I imagine a 3/4 degree lead and a canted land barrel would be great. A slight gain twist would also work. The extreme gain twists (such as starting at 1-50 ending at 1-10) tear conventional jackets too much but some BR shooters have had good success with ones in the range of 1-14.25 ending at 1-13.5. If your going for absolute top velocity I would look into all these things, and then coat the bullets with HBN (Hexagonal Boron Nitrate).</p><p></p><p>As you can see, someone else is thinking about a (FAST) cheytec. But right now my 6.5 Voodoo spitting 140 VLDs at 3475 into 1/3moa groups is keeping me satisfied, oh and did I mention it's mag fed <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p></blockquote><p></p>
[QUOTE="Oliveralan, post: 470573, member: 20245"] What also makes a big difference is throat lead angle. A 3/4 degree or 5/8 degree lead with flatten the pressure curve slightly and can add another 75fps generally, sometimes more. I imagine a 3/4 degree lead and a canted land barrel would be great. A slight gain twist would also work. The extreme gain twists (such as starting at 1-50 ending at 1-10) tear conventional jackets too much but some BR shooters have had good success with ones in the range of 1-14.25 ending at 1-13.5. If your going for absolute top velocity I would look into all these things, and then coat the bullets with HBN (Hexagonal Boron Nitrate). As you can see, someone else is thinking about a (FAST) cheytec. But right now my 6.5 Voodoo spitting 140 VLDs at 3475 into 1/3moa groups is keeping me satisfied, oh and did I mention it's mag fed :D [/QUOTE]
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