I've got about 250 rounds through my WC refurbed 870. The only maintenance I've done on it so far is to run a bore snake through the barrel twice about 100 rounds ago, prior to the Urban Shotgun class I took with Steve Moses yesterday. All through the class, the gun ran slicker than owl shit. My instinct is to not fix something that ain't broke...plus I'm instinctively lazy.
Is there a ballpark round count at which one needs to pull the barrel off and pull out the bolt and wipe out the receiver? What else might need to be cleaned?