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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
168 gr. 308
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<blockquote data-quote="bowhunthard88" data-source="post: 332463" data-attributes="member: 12575"><p>First of all, does the box give the velocity and bullet b.c.? Or at least the velocity? What is your barrel length, because this can affect velocity by as much as -/+ 50 fps per inch of barrel length. You'll need an actual velocity for your barrel, before you can actually dial your scope, and the only way to get this data is to chronograph it. The other way is to shoot each yardage and write down the number of clicks it took to dial in.</p><p></p><p>American eagle is a cheap brand made by Federal, so they could possibly be using the 168 gr SMK (b.c. = 0.447 @ 2600-2100fps) or maybe the 168 Speer (b.c. = <span style="font-size: 10px">0.480).</span></p><p><span style="font-size: 10px"></span></p><p><span style="font-size: 10px">The b.c. could also figured out by chronographing @ 2 different yardages or shooting @ 2 different yardages and calculating the drop formula.</span></p><p><span style="font-size: 10px"></span></p><p><span style="font-size: 10px">If you know the bc and the velocity, I'd be more than happy to make a ballistic chart for you, as I have the SierraI6 software.</span></p><p><span style="font-size: 10px"></span></p><p><span style="font-size: 10px">Good Luck.</span></p><p><span style="font-size: 10px"></span></p></blockquote><p></p>
[QUOTE="bowhunthard88, post: 332463, member: 12575"] First of all, does the box give the velocity and bullet b.c.? Or at least the velocity? What is your barrel length, because this can affect velocity by as much as -/+ 50 fps per inch of barrel length. You'll need an actual velocity for your barrel, before you can actually dial your scope, and the only way to get this data is to chronograph it. The other way is to shoot each yardage and write down the number of clicks it took to dial in. American eagle is a cheap brand made by Federal, so they could possibly be using the 168 gr SMK (b.c. = 0.447 @ 2600-2100fps) or maybe the 168 Speer (b.c. = [SIZE=2]0.480). The b.c. could also figured out by chronographing @ 2 different yardages or shooting @ 2 different yardages and calculating the drop formula. If you know the bc and the velocity, I'd be more than happy to make a ballistic chart for you, as I have the SierraI6 software. Good Luck. [/SIZE] [/QUOTE]
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168 gr. 308
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