I've owned several and they have all been accurate if using the Winchester ammo. I've never been able to get CCI's to group well in the Marlin. On the other hand I have a Rugar and it loves the CCI's. I just picked up another 983 a couple of weeks ago and havn't had time to try it out yet, but I'll try both the Winchester and CCI's in it.
Good Luck!
John