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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Anyone own a 7mm 300 Win Mag?
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<blockquote data-quote="garou22" data-source="post: 875228" data-attributes="member: 68767"><p>Fella's,</p><p> When It Comes To Berger Bullets, And The VLD secant Ogive, I Strongly Suggest Reading Pages 100 And 101 Of Volume 1 Berger Bullets Reloading Manual. In Short: VLD Bullets Are Seat Depth Sensitive And That "Sweet Spot" Is Approximately .040 In WiDth. It Is Recommended To Load 24 Rounds In 6 Round Groups With Each Group Seated .040 Apart I.E.: Group 1 @ .010, 2 @ .050, 3 @ .090, And Group 4 @ .130 Off Lands. </p><p> I Applied This Advice To Both My 6.5X55 (140Gr) And 7 Practical (180Gr). What I Found Was That To See A Measurable Difference In Both Guns, Testing Had To Be Done Father Than 100 Yards, And I Wound Up Doing My Seat Depths At 200 Yards. At 200 Yds, Group Size WaS Visably Different And A Caliper Was Not Necessary To Discern Which Group Was Tighter. I Determined That The 140Gr VLD In My Remington 700 Classic 6.5X55 Swede Likes To Live .010 OFf The Lands While The 7 Practical Launching The 180Gr VLD Prefers A Whopping .130 Gap. NEither Gun Cared Where In That .040 Band The Bullet Sat, So I Wouldn't Waste The Bullets To Do Further Incremental Testing If I Had To Do It Over Again.</p><p> That All Being Said, The "Hybrid" Bullet Design Combines A Tangent Style Ogive Of Traditional Boat TAil Bullet Design With The Secant Ogive Design Of VLD Bullet Design. This Design, According To Berger Manual Page 102, Offers High B.C. without The Fickle SeOfat Depth Sensitivity That Us Common In VLD bullet Designs. I Have Not Tried Any of The Hybrid Offerings And Cannot Attest To THe Accuracy Of This Claim.</p><p></p><p>Hope This Helps.*</p></blockquote><p></p>
[QUOTE="garou22, post: 875228, member: 68767"] Fella's, When It Comes To Berger Bullets, And The VLD secant Ogive, I Strongly Suggest Reading Pages 100 And 101 Of Volume 1 Berger Bullets Reloading Manual. In Short: VLD Bullets Are Seat Depth Sensitive And That "Sweet Spot" Is Approximately .040 In WiDth. It Is Recommended To Load 24 Rounds In 6 Round Groups With Each Group Seated .040 Apart I.E.: Group 1 @ .010, 2 @ .050, 3 @ .090, And Group 4 @ .130 Off Lands. I Applied This Advice To Both My 6.5X55 (140Gr) And 7 Practical (180Gr). What I Found Was That To See A Measurable Difference In Both Guns, Testing Had To Be Done Father Than 100 Yards, And I Wound Up Doing My Seat Depths At 200 Yards. At 200 Yds, Group Size WaS Visably Different And A Caliper Was Not Necessary To Discern Which Group Was Tighter. I Determined That The 140Gr VLD In My Remington 700 Classic 6.5X55 Swede Likes To Live .010 OFf The Lands While The 7 Practical Launching The 180Gr VLD Prefers A Whopping .130 Gap. NEither Gun Cared Where In That .040 Band The Bullet Sat, So I Wouldn't Waste The Bullets To Do Further Incremental Testing If I Had To Do It Over Again. That All Being Said, The "Hybrid" Bullet Design Combines A Tangent Style Ogive Of Traditional Boat TAil Bullet Design With The Secant Ogive Design Of VLD Bullet Design. This Design, According To Berger Manual Page 102, Offers High B.C. without The Fickle SeOfat Depth Sensitivity That Us Common In VLD bullet Designs. I Have Not Tried Any of The Hybrid Offerings And Cannot Attest To THe Accuracy Of This Claim. Hope This Helps.* [/QUOTE]
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Anyone own a 7mm 300 Win Mag?
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