My break in process is very close to the above 2 posts.
- First 10 shots I clean between each shot
- Next 9 shots I shoot 3groups of 3 and clean after every group
- Next20 shots I shoot4 groups of 5 and clean after every group

Then I evaluate the bore condition as described above and if required will clean after every 5 shot group until the surfacebecomes satisfactory.