"The low recoil has got to be an advantage in rapid fire. "
Absolutely. My last three sitting scores were 98, 99 and a 96. I noticed that when the group was running a verticle string, I wasn't leaning forward enough. The rifle was bobbing. I have to pay very close attention to the sling tension. The other thing I noticed about the AR was that I don't take the rifle off my shoulder to reload. I also cant the rifle just a little bit in order to hit the release button and I'm good to go. I also noticed that I was shooting faster than others even with the high scores. I think I was able to get them all in 45 or 50 seconds. Where I fail is the standing. I used to shoot .22 silhouette rifle and when I switched to high power, my standing scores were in the 90's. I have a hard time doing that now. The Texas wind is kicking my butt.
I never have been able to shoot a round group in rapid prone. I generally string vertically. The only time I averaged much above 90 offhand was when I dry fired 30 times every night offhand, and had an air rifle range in the basement. Air rifle at 10 meters will make you tough. Its easy to see your mistakes in sight alignment, sight picture, and trigger control. The wind is tough. A Marine coach at Perry taught us to place the butt out of the pocket and actually on the arm. The rifle is then laying across your chest (don't know if it's legal) for more support. That keeps the rifle from blowing around, but doesn't stop you from blowing around. In the wind, I end up with the trap and skeet approach: See the bull flying toward my front sight and slam the trigger when it gets there. Dry firing a lot helps. Builds strength to allow you to hold in aiming position long enough for a lull in the wind to allow a controlled shot.
Gotta go for a while.
Regards
J.R.