I run a brush thru every time I come back from the range or anytime I have fired it. Then follow up with patches or bore snake. Regular cleaning helps keep the crud and build up from building up. Thou I do know there are others brush it after 500 rds or more.

I wonder if it makes a difference on the ammo one uses, if one does not clean after each range shoot? I know for me there is some ammo that shoots clean and some that shoots extremely dirty. The dirtier the shoot, the more I have to clean.