After a few decades, I am glad to see others, and the arms companies, catching on to extreme 22LR shooting and training for longer range HP shooting. Back in the 80's we trained and practiced for Palma and 1,000 yd prone shooting by using Remington 513T's wearing either 24x or 6-24x target scopes with special made bases and shot at 3-400yds. It was a blast, much cheaper and allowed more practice than burning lots of 7.62/308 match ammo. It also let us use shorter ranges or open fields instead of driving to the 1,000yd comp range.
Learning to read wind, mirage, temp, barometric, etc changes is critical with a 22LR, and when switching over to bigger bores, we saw our scores improve nicely. It was and is a great way to involve younger shooters and get them interested in LR shooting.
Another fun weekend is to set up 1/5 scale 22 Silhouettes beginning at 100yds to 200yds and have a friendly bipod comp with a few friends, or as we often did until just a few years ago, use the 3/8 scale Field Pistol swingers set 200 to 300yds and go prone and/or bipod. Other challenges are rows of orange clays held on a 2x4 board, etc, etc.
While it may not have the sexy appeal of 1,000yds ++, the effects are similar, and sometimes tougher, but the experience and training is priceless.