So I recently put together an AR15 with a 20" national match barrel. It is a shooter. I am using it to stick my nose into the world of precision rifle shooting, as .223 seems like the most cost-friendly and low-recoil way to build basic rifle marksmanship. Unfortunately, I do not reload yet and will unlikely be able to start until I move to a bigger place. With that said, what factory .223/5.56mm ammunition offers the "best accuracy per dollar"? I'd like it to be something I can afford to by in bulk, but not deeply disappointing on paper.
The rifle produced an excellent group with 77gr Federal GMM, but it's a little pricey to buy in bulk, so I am looking for alternatives. I have a few different kinds of ammunition i still have yet to try at the range, but I was curious if there was a consensus for an inexpensive but accurate factory .223 offering for my purposes.
Any thoughts?