I've been using mechanical means to clean my Mossy 590. It gets very dirty after shooting a few slugs, and none of the chemical means I tried proved even remotely effective.
So I cut a piece of an aluminum cleaning rod, stick it into a regular cordless drill with a stiff bronze brush on it, and run it down the bore a few times. I use a cut down shell to center the rod, so it doesn't rub against the bore walls - the primer hole is exactly the right diameter for the rod.
This seems to be very effective, but I am concerned about long term damage to the bore from doing this.
So I cut a piece of an aluminum cleaning rod, stick it into a regular cordless drill with a stiff bronze brush on it, and run it down the bore a few times. I use a cut down shell to center the rod, so it doesn't rub against the bore walls - the primer hole is exactly the right diameter for the rod.
This seems to be very effective, but I am concerned about long term damage to the bore from doing this.