Yes- but if it is too dirty the accuracy gets bad again. I probably don't clean it as vigorously as some may, so it seems to only need a 5rd fouling mag to get back to normal POI. I clean it before it goes back in the safe- every time. First thing at the range is load up a mag, shoot some sighters until it hits where I'm looking and good to go again...
I have also found that my rifle is pretty choosy with ammo. Hornady Vmax bullets work the best, Winchester 20gr xtp may as well be a shotgun shell...