65G HLB Project

[BluntForceTrauma]

I ran some numbers in the JBM Ballistics Calculator. From the drop-down menu I chose Hornady's 6.5mm 123 A-Max. I input 2500 fps and a 200-yard zero. I left everything else default, including altitude at 0.0 ft. (Oh, yes, I also set target speed to 0.0 mph!)

Starting at 2500 fps, I ran the same chart five times, increasing the velocity by 50 fps each time until I reached 2700 fps, an increase of 200 fps.

You guys can easily do these five charts, will take you a total of 30 seconds. Anyway, I'll summarize:

At 2500 fps the drop at 300 yards is 9.9 inches and at 2700 is 8.3 inches. A difference of 1.6 inches.

2500 wind drift at 300 is 7.5" and 2700 is 6.6". Difference of 0.9".

That's all we get for an additional 200 fps?

2500 drop at 600 is 98.0" and 2700 is 82.3". Difference of 15.7".

(By the way, this JBM calculation seems strange: At 500 the drop is 57.3" and then it falls off a cliff to almost double at 98.0" by 600?)

2500 wind drift at 600 is 33.5" and 2700 is 29.8". Difference of 3.7".