The object is to fire from prone, sitting and standing at each target in a set amount of time. If you go over or miss you lose points. If you don't retain a mag you lose a point.
Position one: v The person firing gets into the prone position. The timer calls out the targets (300yd-1, 200yd-2, 100yd-3, 50yd-4) two at a time and you must shoot at each target in under 5 seconds.
The timer blows a whistle to let the shooter know that on his next reload he has to go to position 2.
When he fires his last rd the shooter gets up and does a reload on the move. Put a rock out or an obstacle to move around to increase stress. Depending on how hard you make it figure 20-30 seconds for the 2 shots and reload. If doing the 150 yard range move up a couple yards and shoot from a standing or rice-patty position.
Follow same idea than when the whistle is blown and you do your moving reload move up and shoot from a standing position if doing the 150 yd course.
Here is how it would go with 3 mag changes with 5 rounds per mag. Timer calls out targets 1,4 etc. Maybe try colors or shapes too.
1,2 ( tactical reload between shots)
1,3 (tactical reload between shots)
You know how many rds should be on each target so you can count to see if any were missed at the end.
Increase shooting positions etc to vary. Keep rds in mags low since it's not about shooting mags as much as creating stress, thinking, moving, reloading etc.
Miss 0 - 3 Expert
miss 4 - 6 sharpshooter
miss 7 - 9 marksman
miss 10+ WTF!
Miss 4 shots, go over your time once and fail to retain 2 mags - marksman
Trust me. It's A LOT harder than it looks. Especially when you show up with all your high-speed gear and to impress your buddies and you find out you shoot like a REMFer.
Add in more stress as you move on. Smoke. Yelling. Cold water, etc