Re: Scope height ballistic program question to ponder and consider.
First, I meant to say 20 MOA bases and not degrees. My mind was saying MOA, but my fingers were typing degrees.
He was using 2 chronographs to figure out his exact BC. I was actually done shooting and ready to leave when I saw him setting up. I thought I was the only one who used two chronographs so I hung around.
He was pretty anal about his set up. He had a 100 yards surveyor tape measure.
His actual range data was off his ballistic program at 200 yards by almost 1.75". Still not sure what was going on as I've never been off that much on my b-program, but using two different b programs gave us the same results.
I thought it was the 20 moa mounts, but I stand corrected on that. The only thing I can think of is, one of his chronographs was way off, but his new BC was pretty close to the published BC of the bullet manufacture.
As for the scope height, we measured at the objective, we also measured at the tube trying to find something to work with.
I couldn't hang around as I had an evening flight to catch, but changing scope height brought his results in line with the program.
Distance is not an issue, but the wind will make it interesting!