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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Are you thinking of BC the wrong way?
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<blockquote data-quote="codyadams" data-source="post: 1309520" data-attributes="member: 87243"><p>What speeds were you shooting the two bullets? And did the 147's not shoot well for you? I almost gave up on the 147's but I finally found a load that shot sub MOA, but they were super picky about how much jump. </p><p></p><p>The main things I look at when comparing two bullets trajectory is, in this order, wind drift, retained bullet energy/speed, and the final consideration, and doesn't even really matter to me unless all other factors are the same, is drop. Bullet drop is a known factor, you use a rangefinder so you know exactly how far your target is, so that is accounted for 100%, and if you take your range properly there is little to no error in it. Energy and velocity of course is important for terminal performance, but the most important factor is being able to hit your target, and you are essentially guessing with wind, and if you are wrong, a bullet that drifts less gives you more room for error, and hitting your target comes above all else. </p><p></p><p>Now, these are what I consider when choosing a bullet to do load development with, but what makes or breaks it of course is if it shoots accurate in my gun. If the 147's weren't half MOA or less like they are, I would of course go back to my 140 VLD's that shoot wonderful. </p><p></p><p>For reference, my 140 VLD'S were going 2930fps with H4831sc, and I'm using rl26 with the 147's, and they are going 3090fps, so the 147's are far superior to the 140's in bc and speed, I would have to shoot the 140's over 3200 to make up for the extremely high bc of the 147's. I haven't tried rl26 with the 140's yet, but I might do that to see just how fast I can get them scooting, but with my specific rifle, I just don't think the speed would make up for it. In smaller chambering though like a creedmoore or 6.5x47, you might not get the extra performance with the 147's.</p></blockquote><p></p>
[QUOTE="codyadams, post: 1309520, member: 87243"] What speeds were you shooting the two bullets? And did the 147's not shoot well for you? I almost gave up on the 147's but I finally found a load that shot sub MOA, but they were super picky about how much jump. The main things I look at when comparing two bullets trajectory is, in this order, wind drift, retained bullet energy/speed, and the final consideration, and doesn't even really matter to me unless all other factors are the same, is drop. Bullet drop is a known factor, you use a rangefinder so you know exactly how far your target is, so that is accounted for 100%, and if you take your range properly there is little to no error in it. Energy and velocity of course is important for terminal performance, but the most important factor is being able to hit your target, and you are essentially guessing with wind, and if you are wrong, a bullet that drifts less gives you more room for error, and hitting your target comes above all else. Now, these are what I consider when choosing a bullet to do load development with, but what makes or breaks it of course is if it shoots accurate in my gun. If the 147's weren't half MOA or less like they are, I would of course go back to my 140 VLD's that shoot wonderful. For reference, my 140 VLD'S were going 2930fps with H4831sc, and I'm using rl26 with the 147's, and they are going 3090fps, so the 147's are far superior to the 140's in bc and speed, I would have to shoot the 140's over 3200 to make up for the extremely high bc of the 147's. I haven't tried rl26 with the 140's yet, but I might do that to see just how fast I can get them scooting, but with my specific rifle, I just don't think the speed would make up for it. In smaller chambering though like a creedmoore or 6.5x47, you might not get the extra performance with the 147's. [/QUOTE]
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Are you thinking of BC the wrong way?
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