- Five rounds then clean the barrel
- Repeat for 30 rounds, clean barrel
- Move to 10 rounds per string
- Fire 10 rounds, clean and repeat for 70 shots
- Fire another 100 shots, cleaning between each 20-30 rounds
The barrel will continue to break-in at this point, but it is past the critical stage. You can now begin testing ammunition types to find out what shoots best in your rifle. When you test ammo, it is best if you fire 10 rounds of new ammo through a clean barrel prior to starting an accuracy comparison. This allows the barrel to be seasoned, with lube used in the ammo you are testing at the time. Remember, when you clean and oil your gun at the end of the day, do not use Teflon based oil in the bore. This type of oil is great for moving parts, but troublesome in the rifle barrel. The Teflon will cause a shift in the impact point from the first to the last round. Any other oil is fine for protecting the bore in the short term. There are some excellent long-term greases available.