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Long Range Hunting & Shooting
300gn Scenar at 2700 yards
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<blockquote data-quote="jmden" data-source="post: 398005" data-attributes="member: 1742"><p>Again, what may be the defining issue concerning this shot in question by Harrison is the accuracy or inaccuracy of the reporting. Wikipedia has some info at: <a href="http://en.wikipedia.org/wiki/Craig_Harrison_(sniper" target="_blank">http://en.wikipedia.org/wiki/Craig_Harrison_(sniper</a>) . Is this information accurate or not? How do we know? </p><p> </p><p>Does this info differ from that which you have that started you and friends on your quest to shoot at 2700 yds? </p><p> </p><p>The Wikipedia article (just using that as it was easy to find on the internet) specifically states regarding the load likely used: </p><p> </p><p>"The <a href="http://www.longrangehunting.com/wiki/External_ballistics" target="_blank"><span style="color: #0645ad">external ballistics</span></a> software program JBM Ballistics further predicts that the bullets of British high pressure <a href="http://www.longrangehunting.com/wiki/.338_Lapua_Magnum" target="_blank"><span style="color: #0645ad">.338 Lapua Magnum</span></a> cartridges using 16.2 g (250 gr) Lapua LockBase B408 bullets fired at 936 m/s (3,071 ft/s) muzzle velocity under International Standard Atmosphere conditions at 1,043 m (3,422 ft) elevation (air density ρ = 1.069 kg/m<span style="font-size: 10px">3</span>) and assuming a flat fire scenario and a 100 m (109 yd) zero arrive at 2,475 m (2,707 yd) after approximately 6.017 s flight time at 251.8 m/s (826 ft/s) velocity and have dropped 120.95 m (396.8 ft) or in angular units 48.9 milliradian (168 MOA) on their way. To accomplish such an extreme range shot the <a href="http://www.longrangehunting.com/wiki/Schmidt_%26_Bender" target="_blank"><span style="color: #0645ad">Schmidt & Bender</span></a> 5-25x56 PM II LP telescopic sight with its P4 reticle offering 0.5 mil spaced holdover hash marks has to be <a href="http://www.longrangehunting.com/wiki/Telescopic_sight#Mounting" target="_blank"><span style="color: #0645ad">mounted</span></a> with a vertically canted base or canted rings to be able to dial in the required amount of vertical adjustment if the operator opts to use more magnification than the 5x minimum magnification the telescopic sight offers. Accuracy International produces mounts for telescopic sights with a 13.09 mil (45 MOA) built in cant designed for their .338 Lapua Magnum rifles fitted with the <a href="http://www.longrangehunting.com/wiki/Schmidt_%26_Bender" target="_blank"><span style="color: #0645ad">Schmidt & Bender</span></a> 5-25x56 PM II LP telescopic sight."</p><p> </p><p>If this is the info you guys have and everybody has to work with, then shooting with 300g Scenar's is not a good comparison. Impressive that the target was hit at all? Yes. And once the target was hit, how many consecutive shots consistently hit the target during the test, replicating the Harrison reports?</p><p> </p><p>I'm guessing if you did it with the load mentioned in the above article, then more will listen. </p><p> </p><p>Or, do you have other information that this feat was accomlished using 300g Scenars? I don't know. I'm just asking. Otherwise, the comparative test should happen with 250g LockBase B408, right? </p><p> </p><p>Or, are we just speculating that Harrison might have had access to 300g Scenars? That may be, but what info is there that this may be the case and why use them in this test unless there's very good info that he did use 300g Scenars?</p><p> </p><p>I'd be interested to see what happens at 2700 yds using the load in the Wikipedia article. Do it in calm conditions and use the info Harrison apparently supplied in the BBC interview: </p><p> </p><p>"In a subsequent <a href="http://www.longrangehunting.com/wiki/BBC" target="_blank"><span style="color: #0645ad">BBC</span></a> interview, Harrison reported it took about nine shots for him and his spotter to initially range the target successfully. Then, he reported, his first shot "on target" was a killing shot."</p><p> </p><p>Take the 9 shots, or whatever it takes to get on target and from there see what kind of consistency you have with several shots in a row.</p><p> </p><p>Maybe I'm not too bright, but it seems like so far, we're comparing apples to oranges unless the reported load above is used. </p><p> </p><p>Many of us would appreciate seeing the results.</p></blockquote><p></p>
[QUOTE="jmden, post: 398005, member: 1742"] Again, what may be the defining issue concerning this shot in question by Harrison is the accuracy or inaccuracy of the reporting. Wikipedia has some info at: [URL]http://en.wikipedia.org/wiki/Craig_Harrison_(sniper[/URL]) . Is this information accurate or not? How do we know? Does this info differ from that which you have that started you and friends on your quest to shoot at 2700 yds? The Wikipedia article (just using that as it was easy to find on the internet) specifically states regarding the load likely used: "The [URL="http://www.longrangehunting.com/wiki/External_ballistics"][COLOR=#0645ad]external ballistics[/COLOR][/URL] software program JBM Ballistics further predicts that the bullets of British high pressure [URL="http://www.longrangehunting.com/wiki/.338_Lapua_Magnum"][COLOR=#0645ad].338 Lapua Magnum[/COLOR][/URL] cartridges using 16.2 g (250 gr) Lapua LockBase B408 bullets fired at 936 m/s (3,071 ft/s) muzzle velocity under International Standard Atmosphere conditions at 1,043 m (3,422 ft) elevation (air density ρ = 1.069 kg/m[SIZE=2]3[/SIZE]) and assuming a flat fire scenario and a 100 m (109 yd) zero arrive at 2,475 m (2,707 yd) after approximately 6.017 s flight time at 251.8 m/s (826 ft/s) velocity and have dropped 120.95 m (396.8 ft) or in angular units 48.9 milliradian (168 MOA) on their way. To accomplish such an extreme range shot the [URL="http://www.longrangehunting.com/wiki/Schmidt_%26_Bender"][COLOR=#0645ad]Schmidt & Bender[/COLOR][/URL] 5-25x56 PM II LP telescopic sight with its P4 reticle offering 0.5 mil spaced holdover hash marks has to be [URL="http://www.longrangehunting.com/wiki/Telescopic_sight#Mounting"][COLOR=#0645ad]mounted[/COLOR][/URL] with a vertically canted base or canted rings to be able to dial in the required amount of vertical adjustment if the operator opts to use more magnification than the 5x minimum magnification the telescopic sight offers. Accuracy International produces mounts for telescopic sights with a 13.09 mil (45 MOA) built in cant designed for their .338 Lapua Magnum rifles fitted with the [URL="http://www.longrangehunting.com/wiki/Schmidt_%26_Bender"][COLOR=#0645ad]Schmidt & Bender[/COLOR][/URL] 5-25x56 PM II LP telescopic sight." If this is the info you guys have and everybody has to work with, then shooting with 300g Scenar's is not a good comparison. Impressive that the target was hit at all? Yes. And once the target was hit, how many consecutive shots consistently hit the target during the test, replicating the Harrison reports? I'm guessing if you did it with the load mentioned in the above article, then more will listen. Or, do you have other information that this feat was accomlished using 300g Scenars? I don't know. I'm just asking. Otherwise, the comparative test should happen with 250g LockBase B408, right? Or, are we just speculating that Harrison might have had access to 300g Scenars? That may be, but what info is there that this may be the case and why use them in this test unless there's very good info that he did use 300g Scenars? I'd be interested to see what happens at 2700 yds using the load in the Wikipedia article. Do it in calm conditions and use the info Harrison apparently supplied in the BBC interview: "In a subsequent [URL="http://www.longrangehunting.com/wiki/BBC"][COLOR=#0645ad]BBC[/COLOR][/URL] interview, Harrison reported it took about nine shots for him and his spotter to initially range the target successfully. Then, he reported, his first shot “on target” was a killing shot." Take the 9 shots, or whatever it takes to get on target and from there see what kind of consistency you have with several shots in a row. Maybe I'm not too bright, but it seems like so far, we're comparing apples to oranges unless the reported load above is used. Many of us would appreciate seeing the results. [/QUOTE]
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300gn Scenar at 2700 yards
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