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20 MOA RAIL & JBM Question
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<blockquote data-quote="winmag" data-source="post: 843936" data-attributes="member: 22166"><p>Ok so a few of you probably saw my post in the Equipment section, but I'm having a heck of a time with my scope/20MOA rail.</p><p></p><p>Equipment info:</p><p>Semi Custom 300WSM 180 Accubonds @ 3100+FPS</p><p>Leupold VXIII Tactical 4.5-14x40 A/O</p><p>Leupold Custom Shop installed the Varmint hunter reticle</p><p>Leupold 20 MOA Rail</p><p>Leupold PRW medium rings</p><p></p><p>I zeroed my rifle @ 200 yds.</p><p>Checked at 607 yds with my 550 yd hold on top of target & was like 8 feet high! Woah! Adjusted scope way down. Shot 607 with my 550 yd hold on top of target & smacked it.</p><p>Ok, I thought, something is off. Ill shoot at 300yds. With my 300yd hold. So I did @ was almost 3 feet low!</p><p>So, re-zeroed my rifle at 300 with my 300yd hold. Moved out to 500 @ was way high again! Scratching my head, I tried my 400 yd hold on the 500 yd target & hit 5-1/2 inches low of dead center.</p><p></p><p>I chose the Varmint hunter reticle because it matches up so close to my 300WSM, & 300Wby shooting 180's at 3100 ish for the close stuff, & figured I'd dial anything farther.</p><p>It worked flawlessly on my 300WBY launching 180's at 3085 FPS with standard 2 PC Leupold medium bases, & Leupold rings.</p><p></p><p>WHAT GIVES?!?</p><p>How do I compensate for the 20 MOA rail when I'm running JBM to get close?</p><p>Do I even need to? Or is a 200yd zero a 200 us zero like I always assumed it was?</p><p>Very confused.</p><p>Here's a pic of Leupolds Catalog sub tensions in print, & my 180's in ink pen.</p><p>[ATTACH]24810[/ATTACH]</p></blockquote><p></p>
[QUOTE="winmag, post: 843936, member: 22166"] Ok so a few of you probably saw my post in the Equipment section, but I'm having a heck of a time with my scope/20MOA rail. Equipment info: Semi Custom 300WSM 180 Accubonds @ 3100+FPS Leupold VXIII Tactical 4.5-14x40 A/O Leupold Custom Shop installed the Varmint hunter reticle Leupold 20 MOA Rail Leupold PRW medium rings I zeroed my rifle @ 200 yds. Checked at 607 yds with my 550 yd hold on top of target & was like 8 feet high! Woah! Adjusted scope way down. Shot 607 with my 550 yd hold on top of target & smacked it. Ok, I thought, something is off. Ill shoot at 300yds. With my 300yd hold. So I did @ was almost 3 feet low! So, re-zeroed my rifle at 300 with my 300yd hold. Moved out to 500 @ was way high again! Scratching my head, I tried my 400 yd hold on the 500 yd target & hit 5-1/2 inches low of dead center. I chose the Varmint hunter reticle because it matches up so close to my 300WSM, & 300Wby shooting 180's at 3100 ish for the close stuff, & figured I'd dial anything farther. It worked flawlessly on my 300WBY launching 180's at 3085 FPS with standard 2 PC Leupold medium bases, & Leupold rings. WHAT GIVES?!? How do I compensate for the 20 MOA rail when I'm running JBM to get close? Do I even need to? Or is a 200yd zero a 200 us zero like I always assumed it was? Very confused. Here's a pic of Leupolds Catalog sub tensions in print, & my 180's in ink pen. [ATTACH]24810.vB[/ATTACH] [/QUOTE]
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