Bore Tech Eliminator*
*I like to be done cleaning in 1/2 hr!
(I've used Wipe Out, Butch's Bore Shine, Montana Extreme, Shooter Choice and Sweet's - Bore Tech is all I'll use now).
I then run couple patches of Slip 2000 thru (like Furhunter mention).
I then follow up using either Montana Bore Conditioner or Action Friction Block.