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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
i need ballistics help
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<blockquote data-quote="rem700man" data-source="post: 778740" data-attributes="member: 49206"><p>hey everyone, im in the process of ironing out a future rebuild of my r700 243 bdl into a .308 for lrh and ive just realized i screwed up big time in the ballistics dept. i have a leupold vx3 3.5-10x50 scope that has 57 moa elev & wind. and im trying to decide what scope base to get. i just ran some #s over jbm and came up with some results that i would like you guys to double check for me if you would. </p><p></p><p>bullet-208 amax [.648 g1 bc] @2700 fps</p><p>zero @ 100yds</p><p>sight height 1.5" [im not sure what to put into jbm for this]</p><p>max range 1500 yds</p><p>temp -10 f</p><p>pressure corrected box checked</p><p>std. atmosphere @altitude box checked</p><p>alt. 1312 ft asl</p><p>this is what i come up with</p><p>100-0.0</p><p>200-2.3</p><p>300-4.9</p><p>400-7.8</p><p>500-10.9</p><p>600-14.3</p><p>700-18.0</p><p>800-22.0</p><p>900-26.4</p><p>1000-31.1</p><p>1100-36.3</p><p>1200-42.0</p><p>1300-48.3</p><p>1400-55.1</p><p>1500-62.6</p><p> </p><p>this is where i messed up, i was under the impression that i had all 57 moa of elev after i zerod the rifle leaving me with roughly 55-56 moa of elev. but, from what ive read i would have half of that elev up [i.e 28 moa up and 28 moa down] if i were to go with a 20 moa base i would run out of elev at 1300 yds. is this right or wrong? im all sorts of confused right now lol. thanks in advance</p></blockquote><p></p>
[QUOTE="rem700man, post: 778740, member: 49206"] hey everyone, im in the process of ironing out a future rebuild of my r700 243 bdl into a .308 for lrh and ive just realized i screwed up big time in the ballistics dept. i have a leupold vx3 3.5-10x50 scope that has 57 moa elev & wind. and im trying to decide what scope base to get. i just ran some #s over jbm and came up with some results that i would like you guys to double check for me if you would. bullet-208 amax [.648 g1 bc] @2700 fps zero @ 100yds sight height 1.5" [im not sure what to put into jbm for this] max range 1500 yds temp -10 f pressure corrected box checked std. atmosphere @altitude box checked alt. 1312 ft asl this is what i come up with 100-0.0 200-2.3 300-4.9 400-7.8 500-10.9 600-14.3 700-18.0 800-22.0 900-26.4 1000-31.1 1100-36.3 1200-42.0 1300-48.3 1400-55.1 1500-62.6 this is where i messed up, i was under the impression that i had all 57 moa of elev after i zerod the rifle leaving me with roughly 55-56 moa of elev. but, from what ive read i would have half of that elev up [i.e 28 moa up and 28 moa down] if i were to go with a 20 moa base i would run out of elev at 1300 yds. is this right or wrong? im all sorts of confused right now lol. thanks in advance [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
i need ballistics help
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