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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Altitude effect
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<blockquote data-quote="Cactus5479" data-source="post: 1857126" data-attributes="member: 65451"><p>All good info guys. Many thanks. I am taking multiple rifles, each of which likes a different load. I burned just under 1,000 rounds last year in 4 days but had a number of misses high at the longer ranges. One is 35.0 gr of W748 behind a Hornady 52 gr HPBTM (G1 BC 0.229), chronographed at 3558. Another is 39.0 gr of W760 pushing a 55 gr Sierra BTSP (G1 BC 0.245) at 3449. The last is 33.5 gr IMR 3031 behind a Hornady 50 gr V-max (G1 BC 0.242) at 3671. I think I will re-zero at 100 yds and run the ballistic calculations set at 4000 ft. Do you think that will keep me within minute of prairie dog at 450 or less if I'm dialing elevation turrets based on range? I will be using Nikon's stabilized rangefinder so I'm pretty confident in ranging out to those distances.</p></blockquote><p></p>
[QUOTE="Cactus5479, post: 1857126, member: 65451"] All good info guys. Many thanks. I am taking multiple rifles, each of which likes a different load. I burned just under 1,000 rounds last year in 4 days but had a number of misses high at the longer ranges. One is 35.0 gr of W748 behind a Hornady 52 gr HPBTM (G1 BC 0.229), chronographed at 3558. Another is 39.0 gr of W760 pushing a 55 gr Sierra BTSP (G1 BC 0.245) at 3449. The last is 33.5 gr IMR 3031 behind a Hornady 50 gr V-max (G1 BC 0.242) at 3671. I think I will re-zero at 100 yds and run the ballistic calculations set at 4000 ft. Do you think that will keep me within minute of prairie dog at 450 or less if I'm dialing elevation turrets based on range? I will be using Nikon's stabilized rangefinder so I'm pretty confident in ranging out to those distances. [/QUOTE]
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Altitude effect
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