[snip]
Hah!!! I thought those tornado brushes were for shotguns…..I thought they could not get into the grooves of a rifled barrel
I think the idea is to use the tornado brushes for routine cleaning. It cleans the lead out of the barrel without wearing down the lining. Its design makes sure you are hitting all parts of the barrel's surface.
Brass bristle brushes and copper solvent should still be used periodically, but not every time the barrel is cleaned.
The bore snake doesn't have the number of bristles a brass brush has, so I use the snake to get the barrel mostly clean, and the tornado to loosen the lead.
Cleaning is mostly a matter of opinion. It depends on frequency of use, number of rounds, type of ammo, etc. Some need deep cleaning more often, while most range guns will just need to be cleaned for storage, then occasional deeper cleaning in the groves.
That's how I view my own barrel cleaning needs. I do also take precautions for certain firearms, such as Mosin-Nagant 91/30. The Russian surplus ammo is corrosive, so I immediately rinse the barrel with Windex (the ammonium kind) to stop the acid from eating the metal. Then I give it a good cleaning with brass brushes to make sure any particles from the ammo are unstuck.
I bet many here are on a spectrum of extreme cleaning after every use thru "Meh. I haven't cleaned my gun in forever."
Keep it simple, and do what you think is "good enough". Over-cleaning the barrel isn't as big a worry as over-cleaning the mechanical parts.