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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hart HV .308 barrel, 1-9" - what to do with it??
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<blockquote data-quote="Brent" data-source="post: 23834" data-attributes="member: 99"><p>MM,</p><p> Oehlers Ballistic Explorer clearly gives the advantage to the 240gr SMK at 2550 over the other two in wind and energy, you pick your come ups, 47 to 51 MOA. I would have thought the light bullet also but I'd take the heaviest it would shoot first. Keep in mind that a range estimation error of 5 yards is about max even if you are capable of 1/2 MOA, would be less for sure if not. Wind drift is half that of the 240 at 3200 fps at 1800 yards also.</p><p></p><p>This is when you have to realize the limits of the rangefinder you're using for sure, and is definatly the outer limit no mater what range finder, for first round hits without spotter shots that is.</p><p></p><p>With Darryls at 3200 fps and a 1/2 MOA rifle at 1800 yards, a 5 yard error in range would mean a 15" high or low impact too. A spotter round is the only way here. </p><p></p><p>Remember a 1/2MOA rifle is not a true laser at this range and the 9" error is still there at 1800 yards.</p><p></p><p>[ 11-22-2002: Message edited by: Brent ]</p></blockquote><p></p>
[QUOTE="Brent, post: 23834, member: 99"] MM, Oehlers Ballistic Explorer clearly gives the advantage to the 240gr SMK at 2550 over the other two in wind and energy, you pick your come ups, 47 to 51 MOA. I would have thought the light bullet also but I'd take the heaviest it would shoot first. Keep in mind that a range estimation error of 5 yards is about max even if you are capable of 1/2 MOA, would be less for sure if not. Wind drift is half that of the 240 at 3200 fps at 1800 yards also. This is when you have to realize the limits of the rangefinder you're using for sure, and is definatly the outer limit no mater what range finder, for first round hits without spotter shots that is. With Darryls at 3200 fps and a 1/2 MOA rifle at 1800 yards, a 5 yard error in range would mean a 15" high or low impact too. A spotter round is the only way here. Remember a 1/2MOA rifle is not a true laser at this range and the 9" error is still there at 1800 yards. [ 11-22-2002: Message edited by: Brent ] [/QUOTE]
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Hart HV .308 barrel, 1-9" - what to do with it??
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