RockSlinger404
AH enthusiast
I always clean out carbon after every shoot, unless I'm on a hunt or just before the hunt. Copper only needs to be removed when groups open up. It all depends on what you are shooting with and what you are trying to achieve, for an extreme example contrast a bench rest shooter with a DG PH. If you use the correct tools, i.e. proper rod and bore guide, you shouldn't damage the barrel. Also remember that every rifle is different, some like a clean barrel, others don't care. I've also seen that mixing bullets tend to open groups in some rifles. I shoot a lot of Peregrines out of my 404. If I shoot a group with A-Frames after a few groups with the Peregrines, the groups tend to be larger than shooting the A-Frames out of a clean barrel.