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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How important is bc?
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<blockquote data-quote="MontanaRifleman" data-source="post: 356896" data-attributes="member: 11717"><p>Steve,</p><p> </p><p>Good question and it's all relative to what's important to the shooter and what he is willing to pay. If 600 yds is all the farther you're going to shoot, then it just doesn't matter a whole lot.</p><p> </p><p>For me, since becomimg interested in LRH, I've come across some good ambush spots that are in excess of 1K. Last year I found a good spring bear ambush spot in the range of 1000-1300 yds across a canyon. I'm hoping to get a shot there this year. In this case BC is very critical and every littel bit helps. It extends my max effective range and It helps buck wind.</p><p> </p><p>The difference out of my RUM for a .5, .55 and .6 BC 180 gr @ 3400 fps bullet means ranges of 1100, 1225, and 1325. A BC of .7 gets my bullet on target with a good bit more thump and a significant diff in wind drift. The diff in wind drift between .5 and .7 @ 1200 yds is about 55%, 78" vs 50" per 10 mph.</p><p> </p><p>Bottom line is it's all relative based on a person's goals and priorites. Ask 10 different people and you'll get 10 different answers.</p><p> </p><p>-Mark</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 356896, member: 11717"] Steve, Good question and it's all relative to what's important to the shooter and what he is willing to pay. If 600 yds is all the farther you're going to shoot, then it just doesn't matter a whole lot. For me, since becomimg interested in LRH, I've come across some good ambush spots that are in excess of 1K. Last year I found a good spring bear ambush spot in the range of 1000-1300 yds across a canyon. I'm hoping to get a shot there this year. In this case BC is very critical and every littel bit helps. It extends my max effective range and It helps buck wind. The difference out of my RUM for a .5, .55 and .6 BC 180 gr @ 3400 fps bullet means ranges of 1100, 1225, and 1325. A BC of .7 gets my bullet on target with a good bit more thump and a significant diff in wind drift. The diff in wind drift between .5 and .7 @ 1200 yds is about 55%, 78" vs 50" per 10 mph. Bottom line is it's all relative based on a person's goals and priorites. Ask 10 different people and you'll get 10 different answers. -Mark [/QUOTE]
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How important is bc?
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