Bryan,
I was going to buy the Norma because it was on sale, then I switched gears wanting to get another 100 rounds. The Norma brass was on clearance for $50.99 on Dec. 20, then dropped to $46.99, now $42.99. The Norma will be great for his AAC. I think the AR is a little harder on the brass.
I have the same DPMS that your wife ordered , the RFA3-300SR. You will like it. Looks great and the upper and lower are tight. You have a keeper of a wife!
So far I have only shot a couple Nosler 125 gr. ballistic tips. I'm ordering some Nosler Varmageddon 110 gr. to do the barrel break in. Cheaper that way as $25.99 per 100 versus ballistic tips that are $20 per 50. Will probably use the ballistic tips to work up loads to load up Nosler Accubonds 125 gr.
I did that with my 300 win mag and those bullets grouped well. The accubonds didn't shot as good as the ballistic tips, but impressive enough that I stopped there. The accubonds have been pretty hard on our Spring bears, but so have the Barnes Triple Shocks, which is basically what the Barnes Tac-X is. The tac x is designed to open up at lower velocities in the BLK range. I will play with the Barnes at some point and stick with whatever groups best. Oh, using H110 so far and it took me over one year to get ten pounds of Accurate 1680.
Talked to the Pro Shop at Nosler last week. He said they have had good success and good feedback from guys using Varmageddon. Should be a good all around plinking round. He said they are in the process of developing a 220 gr. Bullet for subsonic, so keep your eyes peeled.
For subsonics, Sierra Matchkings can't be beat for consistency and accuracy .