Bit of a clickbait header, but here goes.
Short version of the question first - for people shooting in higher DAs, what’s your approximate drop at 1000 shooting factory 140gr ammo out of a 6.5 creedmoor/260 rem? I say factory because I know most handloaders go a little faster on their MVs. Now the long version. I was shooting prairie dogs in Nebraska a few days ago and took some just for kicks shots with my 6.5 creedmoor at a sandy patch on a hill I ranged at 1015 yards. My load is factory federal 140gr going about 2740, and my trued BC is .557 (verified at 800 and 1000). With my zero DA of 1700, I need 9.1 to get to 1015, and Jbm and 4dof said to take off 0.4-0.5 Mils of elevation to make the shot (Nebraska DA was about 4600, temp 80-85). In actuality, I only needed 7.5 mils of elevation. A ~1.0 mil difference between predicted and actual seems really big. Fundamentals were solid and position was exactly the same as verifying BC back home, prone off a mat. Is there just no gravity out west? Am I crazy? One note, I was shooting east and there was about a 16ish mph wind from the south, I needed about 3.2 of wind. I have a physics degree and a rudimentary understanding of AJ, but I’m pretty sure it’s not nearly 1.0 at 1015. None of this stuff is life or death, I only shoot west of the Mississippi about once a year, just curious about what you all have to say.
Short version of the question first - for people shooting in higher DAs, what’s your approximate drop at 1000 shooting factory 140gr ammo out of a 6.5 creedmoor/260 rem? I say factory because I know most handloaders go a little faster on their MVs. Now the long version. I was shooting prairie dogs in Nebraska a few days ago and took some just for kicks shots with my 6.5 creedmoor at a sandy patch on a hill I ranged at 1015 yards. My load is factory federal 140gr going about 2740, and my trued BC is .557 (verified at 800 and 1000). With my zero DA of 1700, I need 9.1 to get to 1015, and Jbm and 4dof said to take off 0.4-0.5 Mils of elevation to make the shot (Nebraska DA was about 4600, temp 80-85). In actuality, I only needed 7.5 mils of elevation. A ~1.0 mil difference between predicted and actual seems really big. Fundamentals were solid and position was exactly the same as verifying BC back home, prone off a mat. Is there just no gravity out west? Am I crazy? One note, I was shooting east and there was about a 16ish mph wind from the south, I needed about 3.2 of wind. I have a physics degree and a rudimentary understanding of AJ, but I’m pretty sure it’s not nearly 1.0 at 1015. None of this stuff is life or death, I only shoot west of the Mississippi about once a year, just curious about what you all have to say.
