I've heard both sides on this topic, and I think I'd rather err on the side of caution. So when I got my Oly Arms AR, I did the same thing, shoot/clean, for the first 15 rounds, then 5 shot groups until I had fired 50 rounds. Then let it soak with Hoppe's Copper solvent for 24 hours, and clean it again. Voila! I'm still testing, but with loads it likes, 1/2" at 100 yards is pretty easy. I hope to cut that in half with heavy bullets, but so far it really likes the El Cheapo W-W bargain stuff, the 45-grain hollow point. Three shots in about .335, the best so far. I bought the gun to thin the local coyote population, they'd better be on their toes, or I'll dump them on their nose! :lol:
PJ