All I shoot from Black Hills is the Re-Man blue box stuff. No need to spend the extra money for new stuff in my opinion. Blue box shoots as well as the Red box in my experience.
1 in 9 twist AR's are real finicky about what they like to shoot. This is why you see me speak about 1 in 8 twist barrels for the AR all the time. Generally, 52's, 55's, and some like 60's. I have one that really likes 40gr loads but I don't consider them a good bullet weight for predators.