Re: Breaking in a new barrel???
Hi there, I am doing this right now with a 7 mm mag. I am firing one shot, cleaning the carbon with slip2000 carbon killer and then using copper solvent until all the copper is gone, fire a shot and repeat until copper being laid down reduces considerably.
A match barrel might take about 10 shots to do this, a factory barrel considerably longer.
Once the copper laid down reduces considerably you can then go to cleaning every 3-5 shots until you have fire d 20 or so shots.
Every one has their own way of doing this and the next person will probably tell you something different!