Originally Posted by Iden
Thanks to both of u for the replies. The factor of the wind was what had me wanting to shoot at 100. It definitely makes sense that the farther u get the more groups are defined.
Engineer101 what do u mean that you don't consider bullet stabilization a factor? I have just heard word through the grape vine that sometimes a bullet takes farther than 100 yards to stabilize. That could be complete myth, but that is why I am asking?
I think what you are referring to is a bullet "settling down" or "going to sleep".
Check out this thread, and be sure to click on the video in post #1. Also note that they are basically saying the corkscrew effect is likely only one caliber size in magnitude. Epicyclic motion of a bullet (video)
As far as testing at distance and accounting for wind. Assuming consistent shooting, my experience is that horizontal spread is often a function of how much a rifle likes a bullet and seating depth. 1MOA horizontal spread at 100yds is usually 1MOA at 500yds. Vertical can change dramatically.
Once I have a combo that shoots tight at 100 or 200, I'll stretch it out on a calm day, and basically only look at vertical spread. Tighter vertical = better load.