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.300 blackout, or really a .30 cal projectile has a very good drag coefficient, it loses almost no velocity in 100 yards when it is subsonic. The issue is when a bullet drops from super sonic, to subsonic it has a drastic change in drag, and that causes a big drop in velocity. To my knowledge a .300 whisper has enough bang to keep it supersonic and accurate out to around 650 yards, but after that I believe it drops like a rock. Subsonic they are good out to around 400-450 yards."When the people find that they can vote themselves money, that will herald the end of the republic." -Benjamin Franklin
"A democracy will continue to exist up until the time that voters discover that they can vote themselves generous gifts from the public treasury." -Alexander Fraser Tytler
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The 6.8spc is not a long range round, I personally would not shoot anything over 250-300 yards with it. Most people use Barnes bullets and they need speed to open up. You could also look at a 6.5 which is supposed to be pretty flat out to 400-500 yards.
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Originally posted by no4njnk View PostThe 6.8spc is not a long range round, I personally would not shoot anything over 250-300 yards with it. Most people use Barnes bullets and they need speed to open up. You could also look at a 6.5 which is supposed to be pretty flat out to 400-500 yards.
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