Have you ever used bore tech rimfire blend? The guy I met at the shooting range swore by it. I am currently using Pro Shots 1 step cleaner & lubricant. I do need something more effective to clean the receiver/ feed ramp area. I am using old tooth brushes but they can't get into the feed ramp area very well. Anyone make a brush with bristles on the end or something that can get into the nooks and crannies?