Here's another 50 round drill specifically pertaining to improving your engagements off of a tank trap.
I will refer to each post or crevice by #, it is not specifically important as far as the write up goes, but when you get to the range to train just know which ones you labelled which so you don't get confused.
Start off with some warm up dry fire drills.
5x Post 1 Dry FIre
5x Post 2 Dry fire
5x Post 3 Dry fire
5x Post 4 Dry fire
5x Crevice 1 Dry Fire
5x Crevice 2 Dry Fire
Then clean up with with a 5 round group from the prone ( this is to settle in with the rifle, and also will allow you to confirm zero before beginning live fire).
Modified Kraft Challenge (12 rnds):
(Pick 4 of the 6 addresses to use for the course of fire)
3 rotations in this order (17 rnds total at this point)
5 iterations of transition drills for time(Based off Kraft number from previous drill)
Any order you wish, transition from position to position and fire 1 shot under the time limit
ie: Post one in condition 3 -> beeper goes -> transition to post 2 fire one shot on kraft target.
5x (first transition)
5x (second transition)
5x (third transition)
5x (fourth transition)
(If you are well under the time constraints you can transition earlier to another position to save rounds for another spot fif you prefer)
Target: Kraft paper (clean sheet)
(20 rnds : total 37 rnds)
You will then have at least 13 rounds left to shoot whatever you want
( I usually will pick my worst transition and put at least 3 more on that address)
Then you can shoot to distance not under time, or if your feeling spicy enough run the drill under time but now use a distance target!