Originally Posted by beretzs
I got a bit closer using 30 degree temp, 50% Humidity, 7000 ft elevation, 2910 start speed, .543 BC.

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Thanks for running that down fellas. I was racking my brain as to how he came up with the numbers. Ain’t no doubt if you could put the bullet on point at 750 you’d make a dent.

I normalize my barametric pressure to my altitude. The standard pressure is only for sea level. As you go up in altitude, there is less air to be pressurized. I learned this some years ago, and it corrected errors I was seeing. I kept impacting really high on targets. I thought it was my velocity. 7000 ft ASL barametric pressure is typically between 22 and 22.5, I believe.

I may be double-factoring, but it works for me. I notice not many guys adjust barometer for elevation.

I belong on eroding granite, among the pines.