I'll echo the sentiments of the other posters. You really need to shoot a group at 300 to know how fast the bullet is dropping; no way around that. A lot of guns I've owned and seen others with will be great at 100 and 200 and then drop off the charts at 300. 6-12" lower than the ballistics chart tells you. As long as you hold a little high at 300 it's not a problem but trying to extrapolate where the bullet will be PAST 300...well, good luck.
I've punched #'s into ballistics programs til I was blue in the face and couldn't get the downrange trajectories to come close to what I'd already found out at the range.
lol, I think I've spent 99% of my time worrying about the 300+ yard shot and in the field I've never shot anything beyond 100 yards!
