Who sells that? Wondering where I can go to stock up?!
A serious answer to the question you posed in jest:
1 - you can attend various professional training courses (tactical/sniper oriented, or oriented toward competitive shooters), for $500-$1000/day.
2 - you can join your Provincial Rifle Association and start shooting Fullbore competitions. Even if you are not explicitly interested in "shooting competitions" (I wasn't when I started), it is a fantastic way to get to shoot at long range (300y-1000y), in circumstances which allow you to objectively assess your performance and your progress. And the best part of all, you will be able to get training and advice from topnotch shooters, often world-class shooters, for FREE.
One way or another, "Experience" ends up being a mental catalog that you draw on, and use to make imperfect-but-reasonably-educated guesses as to what you ought to try for your sighter, or what you ought to do for the wind change you just saw happen. The more shooting you do, under different wind weather and visibility conditions, the more you are able to "fill in" your mental catalog. It is very important when you are gathering your experience that you have clear high quality feedback. Shooting competitions, which are done at standard distances and standard targets, with other known-highly-experienced shooters firing at the same time, offer a surprisingly good way to assess what you have done right that day, what conditions you have under-corrected for, which ones you over-corrected for, which ones you plain-out missed seeing, etc.... in other words it is a very efficient and effective way to build up your experience on what various wind conditions look like and how to best handle your approach to getting your first shot on target, and keeping each shot of your string as effectively centred as possible using all the information at your disposal.
One of the very best ways to gain "experience" in wind reading and shooting tactics, as quickly as possible, is to participate in team matches. The very best position on the whole range, in my opinion, is in the plotter's chair. You watch and work with an experienced wind coach, and see what he does (and just as importantly, what he does NOT do) in response the the flags and mirage that he sees. Then an experienced shooter fires a shot, you plot its point of impact, and then you and the coach work together to determine the very best thing that you can do to fire your next show. You can learn more as a plotter for a team match in a couple of days shooting, that you might learn at a couple of dozen days of shooting matches individually.... and of course all that you learn as a plotter can be immediately used by you when you shoot as an individual shooter.
