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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5-284 shooters, how do these drops compare with yours
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<blockquote data-quote="Mysticplayer" data-source="post: 86036" data-attributes="member: 8947"><p>Ian, nice to see a new toy making noise. Fun calibre isn't it?</p><p></p><p>Here are some drops using my 140gr SST in a 6.5-06. Load is 58.5gr of H4831SC (hot), CCI BR2, in LC brass. Velocity average was 2975fps from a 24" Bevan King barrel. Adjustments are total minutes based on scope turrents (Elite 4200 6X24) and are with a 100yd zero. Drop has also been verified on JBM software to fill in the all the different yardages. Real world shooting agrees with table. Leica 800 Rangefinder.</p><p></p><p>300yds/ 2.5, 350/ 3.25, 400yds/ 4, 450yds/ 5, 500yds/ 6, 550yds/ 7, 600yds/ 8, 650yds/ 9.5, 700yds/ 11, 750yds/ 13, 800yds/ 15.</p><p></p><p>I am sure you can see how much flatter the SST's fly. You got to try them. Really Goofy performance.</p><p></p><p>Also, please note that my comeups are very predictable for each distance. Increase of 1 min for each 50yds until 600yds, then 1.5min. Quite common for drop to increase after 600 to 650yds with a variety of bullets and cals with similar muzzle velocities. Just the way a bullet decelerates. </p><p></p><p>I have always found that the comeups are like this. Bullets travel in a predictable curve so the amount of elevation adjustments for distances should also increase predictably.</p><p></p><p>Your comeups most certainly aren't. Some require 1/2 min, others 3.5mins. No way that should be. Either the range is off by a lot (unlikely given the range finders you own), the rifle is bouncing and not shooting repeatably (unlikely with you at the helm) or the scope is pooched (most likely).</p><p></p><p>I would take a serious look at how those turrents are working. Recheck these drops by shooting again. Hard to imagine they would repeat given the 'bumpy' changes.</p><p></p><p>Good luck...</p><p></p><p>Jerry</p></blockquote><p></p>
[QUOTE="Mysticplayer, post: 86036, member: 8947"] Ian, nice to see a new toy making noise. Fun calibre isn't it? Here are some drops using my 140gr SST in a 6.5-06. Load is 58.5gr of H4831SC (hot), CCI BR2, in LC brass. Velocity average was 2975fps from a 24" Bevan King barrel. Adjustments are total minutes based on scope turrents (Elite 4200 6X24) and are with a 100yd zero. Drop has also been verified on JBM software to fill in the all the different yardages. Real world shooting agrees with table. Leica 800 Rangefinder. 300yds/ 2.5, 350/ 3.25, 400yds/ 4, 450yds/ 5, 500yds/ 6, 550yds/ 7, 600yds/ 8, 650yds/ 9.5, 700yds/ 11, 750yds/ 13, 800yds/ 15. I am sure you can see how much flatter the SST's fly. You got to try them. Really Goofy performance. Also, please note that my comeups are very predictable for each distance. Increase of 1 min for each 50yds until 600yds, then 1.5min. Quite common for drop to increase after 600 to 650yds with a variety of bullets and cals with similar muzzle velocities. Just the way a bullet decelerates. I have always found that the comeups are like this. Bullets travel in a predictable curve so the amount of elevation adjustments for distances should also increase predictably. Your comeups most certainly aren't. Some require 1/2 min, others 3.5mins. No way that should be. Either the range is off by a lot (unlikely given the range finders you own), the rifle is bouncing and not shooting repeatably (unlikely with you at the helm) or the scope is pooched (most likely). I would take a serious look at how those turrents are working. Recheck these drops by shooting again. Hard to imagine they would repeat given the 'bumpy' changes. Good luck... Jerry [/QUOTE]
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6.5-284 shooters, how do these drops compare with yours
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