I'd like to be helpful, but I've stubbornly stuck to lighter bullets (until very recently, as posted just a while ago). The 70-grain Accubonds probably don't fall in the "cheap" category, but I could tell they wanted to shoot in my two ARs of the 5.56 persuasion. Could very well be that the cheapest Hornadys would act the same, I dunno.
Where I can be helpful is on the subject of primers. I have never had any issues with primers like the CCI 400, but it is often said that it's much better to go with something like the 450 or the No.41. I think Federal is offering a special SR primer now specifically for ARs but I do not recall the name...AR Gold or some such? I believe Remington 7-1/2s are good to go in ARs also. As I said, I've never had issues using any small rifle primer (while avoiding Remington 6-1/2s, of course), but why learn the hard way? Experience can be a hard teacher.
Good luck on your quest.
