What cayugad said....You have to take time to clean...After I shoot a deer and before I get out of my stand I have cleaned my barrel...Assuming you mean an inline...I carry a zip lock bag with a small eyedrop bottle with rubbing alcohol and a smalll bottle of oil...I run 2-3 damp patches down the barrel (both sides of patch)...then dry with a clean patch, another oiled patch and then another clean patch...then I reload...If I hunt the next morning I leave this load in...but the gun is unloaded and cleaned completely the next day.