nope, just rounds down range. I think i cleaned it before i shot it, but after that i was looking to reach copper equilibrium before i worked up a load. I just happened to get a smoking deal on a 12 LRP in 6.5 Creedmoor, so it never saw more than 200 rounds of all factory ammo. It seemed to like the 143 Precision Hunter and Winchester match 140 the best, i sold it to my brother-in-law because it shot so good, that i wanted it to go to a good home. After my first couple rifles that i did the one shot- clean for 5 rounds then 5 shots-clean for another 20 and they never shot any better than the ones that i just cleaned when i first got them and then just put rounds down range till accuracy dropped off. I have a bunch of really good shooting guns, and don't do break-in anymore.