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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Bushnell G-Force 1300 ARC rangefinder
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<blockquote data-quote="Mike027" data-source="post: 688501" data-attributes="member: 5816"><p>Im happy to answer any questions that I can. </p><p></p><p>It gives the lines of sight yardage and adjusted yardage for the angle. It will give you the angle in percentage. It can also be set for line of site distance only if you choose to do so. </p><p></p><p>I have it set for ballistic group letter "F". According to the manual that is the group to use if you have a 10-12"drop at 300 yards and/or 47 - 54" drop at 500 yard with a 100 yard zero.</p><p></p><p>Im shooting a Weatherby Accumark 30-06 with handloads. My load is a 180 grain Speer Deep Curl with a .483 BC at 2805 fps (57 grains H4350). My sight height is 1.75". A free ballistic calculator on the internet gives me a drop of -12.72" at 300 yds and -53.23 at 500 yds. This is with a 100 yd zero at 600 ft altitude with an air temperature of 45 degrees. I did this to verify the proper ballistic group to use (F). </p><p></p><p>Now you can also set the rangefinder for a sight-in range of 4 different ranges I set it for a 200 yd zero. </p><p> </p><p>Earlier this week I ranged a building at 525 yds and the Gforce gave a drop of -51" (at 0% muzzle elevation). This matches up closely with the -51.82" drop shown on the ballistic calculator for the same yardage (set for a 200 yd zero). So on paper it looks good but it needs to be validated in the field. </p><p></p><p>The one problem of course is that the rangefinder does not take into consideration the altitude. Even at the modest range of 525 yds, high mountain altitudes may change that drop by 4 or 5 inches.</p><p></p><p>With the no questions asked warranty for a full year it will give me a good opportunity to really test it out. </p><p></p><p>Im glad fall is almost here. : ) Mike</p></blockquote><p></p>
[QUOTE="Mike027, post: 688501, member: 5816"] Im happy to answer any questions that I can. It gives the lines of sight yardage and adjusted yardage for the angle. It will give you the angle in percentage. It can also be set for line of site distance only if you choose to do so. I have it set for ballistic group letter "F". According to the manual that is the group to use if you have a 10-12"drop at 300 yards and/or 47 - 54" drop at 500 yard with a 100 yard zero. Im shooting a Weatherby Accumark 30-06 with handloads. My load is a 180 grain Speer Deep Curl with a .483 BC at 2805 fps (57 grains H4350). My sight height is 1.75". A free ballistic calculator on the internet gives me a drop of -12.72" at 300 yds and -53.23 at 500 yds. This is with a 100 yd zero at 600 ft altitude with an air temperature of 45 degrees. I did this to verify the proper ballistic group to use (F). Now you can also set the rangefinder for a sight-in range of 4 different ranges I set it for a 200 yd zero. Earlier this week I ranged a building at 525 yds and the Gforce gave a drop of -51" (at 0% muzzle elevation). This matches up closely with the -51.82" drop shown on the ballistic calculator for the same yardage (set for a 200 yd zero). So on paper it looks good but it needs to be validated in the field. The one problem of course is that the rangefinder does not take into consideration the altitude. Even at the modest range of 525 yds, high mountain altitudes may change that drop by 4 or 5 inches. With the no questions asked warranty for a full year it will give me a good opportunity to really test it out. Im glad fall is almost here. : ) Mike [/QUOTE]
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Bushnell G-Force 1300 ARC rangefinder
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