Just curious as to why you say 'and a .22'.
Because Nickle is a huge fan of the rapid fire AQT. 40 rounds in 4 minutes. I fired over 550 rounds at the Harvard Appleseed, and I heard they broke 700 at Proctor. If you can afford to shoot that much centerfire in a weekend, more power to you. You can buy a 10/22 and shoot it for a weekend for what it would cost to shoot 308.
Most of Appleseed is done at 25 meters, so 22LR works great. Harvard was all 25M. If I go to Jericho in July, I plan to shoot 22 on Saturday and centerfire on Sunday.