C-99;
Ditto what Publicola said; but a couple of add ons;
Try to get you about 200 Federal '06 cases for match use. My brother used to shoot AF matches for AF-TAC Com team (w/m16's) and NRA highpower with his NM Garand. He did the "treatment" on numerous cases, and said that in retrospect, he'd been just as well off just using the Federal "as is", too include neck-turning. He picked up a few at local "sight-in" areas, and I sent him a "care-package" of about 400 I picked up at a local range back about '95, and now he has a lifetime supply.
Also, my brother say's try the Sierra 125spt for the 200yd rapid-fire. Adjust the powder charge to get best accuracy to get proper functions and best accuracy. He shellacked the Montana State NRA Master champ back one year in the '80's at their state championship in the 200yd event. (But of course, the Krieger barreled AR-15 w/ 80gr Berger VLD's "stomped" him at the 600yd line !!
BTW: Varget and RL-15 along with the '4895's are the best. My brother says he's "retro" like the gun, so he uses the IMR-4064 with good effect!!
Try the Sierra, Nosler, and Hornady 168's, and use the best in your gunfor the long lines. (due to throating, some guns have preference. My brothers gun does not, so, whoever's the best price when he needs more.
Good luck!