I know that you can buy wolf cheaper than Freedom and it is consistently good ammo, I buy the Freedom just so I have brass to reload. I dont go through near the bullets you do but would love to. I did read something today about DPMS having a list of ammo that they recommend not be run in their rifles, I have shot a lot of it and never had a problem. I did notice that on their new ammo Freedom generally isnt that much of a savings. But where I would have to order it anyway and reload my own. it works for me. So what kind of training courses do you go to that lets you burn so much lead? They must be fun.
Just got a hold of one of the MiWall guys. The Wolf is running $115 per 500, with a break price of $220 for 1,000 rounds. If I shoot brass, I will buy the xm855 or 193 for about 320 per 1,000. But it's rare to run the brass stuff for me.
I do a lot of carbine training drills. One day would be advanced, whether it's teamwork, offhand shooting, CQB; I did a course on breaching/ securing about 2 weeks ago. That one was a lot of fun- as was the course where it was defense tactics with automobiles (Basically shooting into and out of cars, learning what works, and what does not)
Then, every 2-3 courses you do a basic rifle 101/202 type class. These repeatedly reteach you the little stuff you lose an edge with. Switching from strong hand to weak hand, reloading under duress, single fire practice- and the basics; safety control, trigger control, trigger release/ reset. You can do it 10 times, and every time, you will find a littel tweak you get better with.
Average course is about 800 rounds per person, per day. So, with my sons, that's a cool 2400 rounds a day. The courses vary wildly in cost; some are simple, and about $125 per day. Some run $400 and more. The vehicle course was pretty expensive; $650. But we wrecked 5 cars in 1 day. 5 running, otherwise street legal cars. It can't be cheap, even if you get a deal from pick a part. (There were 12 shooters, and 3 instructors.) Everyone shot thru car windows in both directions, with rifles and pistols. Everyone shot thru doors, trunks, tires got shot.....

We avoided the radiator and engine as best we could. FWIW, a 223 FMJ will not readily penetrate a car engine. But a 308 does penetrate the sheetmetal and finds its' way into the block at 25 yards.
I will look for a training course for you if I can find one out that way for a reasonable price. They are very valuable, and there are plenty that are not real bank breakers ($150ish a day) It's amazing how much better you do when you are not the supervisor, but rather concentrating on being the shooter. Well worth it to do a basic course once a year. It will take you back in time, to when you were really young, and in basic training....without all the pushups and getting up at 4:30 for a cold shower!!!