I reload for my Mini 14-30, brass and 123 g bullets can be a challenge to find. I don't own a AR style rifle, I do own a mini 14-5.56 I reload for that also. I do like the reloading, it is requires concentration. All my shooting is plinking at the range. I just want to hit what I aim at, I shoot to a 100 yards with open sights and can keep the shots in the center of the silhouette target. peep sights are easy to use, you just have to know where to hold on your target.