When you guys are spending the day at the range, or doing load prep., what do you use to efficiently remove the carbon build up between rounds ?

I'm not concerned about the copper that's collected in the rough patches, but the carbon that builds up in the throat area of the high velocity rifles that will cause throat wear, heat build up and premature barrel failure.

Does anyone have a "secret formula" of stuff that will dissolve the carbon without spending tons of time going thru a zillion patches and bore brushes ? What do you use to get the carbon out ?

Thanx, y'all.

Lin.