Been playing around with LB3 for a few weeks and finally got a chance to put it through the ringer this weekend.
I am fortunate that I have access to a private range with known and exact distances all the way from 100 yds to 850 yds in 50 yd increments. Only problem is it is 4.5 hours away and we usually camp when we go. So, my oldest son (14) and I packed up the truck with more shooting gear than should be hauled on an inter-state highway and disappeared for three and a half days of "man-only" fun.
Before I went, I set-up LB3 to be able to work with the two test rifles, a 338 WM and a LR308, both with known accuracy, muzzle velocities and scopes that track very well. Starting with Litz G7 BC's, I tweaked LB3 ever so slightly to match JBM online results at the atmospheric conditions I thought I might encounter. (75F, 55RH, 29.4SP). When we shoot, it is 92F in a driving rainstorm with 95% RH. Oh well, at least the wind was quiet for the test. For giggles, I turned on SD and Coriolis as well.
How did we do? The first rifle test shot low and increasingly so the farther out we went. Shit. So we re-checked zero and sure enough, I had to come up a couple of clicks (1/4" MOA) to re-zero. We then re-did the test and we were dead-nuts on all the way out to 850 at each increment. And when I say "dead-nuts", I mean it. To the 1/4" click.
And so we went to the heavier hitter hoping our luck would hold and sure enough the 338 was dead on as well at each and every increment. Overall, we were very pleased with LB3 and our testing.
So, I'd like to tell you that the thread title is accurate and this weekend was all about testing ballistics software, but it really was about shooting with my son! He even has a new scope scar to show for his efforts.
I am fortunate that I have access to a private range with known and exact distances all the way from 100 yds to 850 yds in 50 yd increments. Only problem is it is 4.5 hours away and we usually camp when we go. So, my oldest son (14) and I packed up the truck with more shooting gear than should be hauled on an inter-state highway and disappeared for three and a half days of "man-only" fun.
Before I went, I set-up LB3 to be able to work with the two test rifles, a 338 WM and a LR308, both with known accuracy, muzzle velocities and scopes that track very well. Starting with Litz G7 BC's, I tweaked LB3 ever so slightly to match JBM online results at the atmospheric conditions I thought I might encounter. (75F, 55RH, 29.4SP). When we shoot, it is 92F in a driving rainstorm with 95% RH. Oh well, at least the wind was quiet for the test. For giggles, I turned on SD and Coriolis as well.
How did we do? The first rifle test shot low and increasingly so the farther out we went. Shit. So we re-checked zero and sure enough, I had to come up a couple of clicks (1/4" MOA) to re-zero. We then re-did the test and we were dead-nuts on all the way out to 850 at each increment. And when I say "dead-nuts", I mean it. To the 1/4" click.
And so we went to the heavier hitter hoping our luck would hold and sure enough the 338 was dead on as well at each and every increment. Overall, we were very pleased with LB3 and our testing.
So, I'd like to tell you that the thread title is accurate and this weekend was all about testing ballistics software, but it really was about shooting with my son! He even has a new scope scar to show for his efforts.
] adjust coefficient(s) to match field data no matter the program.
