There's about as many different break-in procedures as there are shooters, and I don't think many of them are wrong, but here's what works for us:
Clean between each round for the first 25 rounds. This does not need to be a lot of work. A wet patch followed by a dry patch works fine for me. Main idea here is to remove powder fouling, NOT copper fouling, although you could throw a brush into the mix every 10th time or so.
After the first 25, clean every 10 rounds after that, up to 100 rounds or so. Then just use your own judgement or preferred cleaning schedule. You'll start to see the rifle "come in" at 200 rounds or so, usually.