I have seen some get better after over 100, up to 200. Don't change anything until you are sure it is broken in. then clean with JB paste and rinse with a solvent. if you have a bore scope, confirm it is clean. after all that start looking at speed and velocity.
Pic. is a clean barrel of a Weatherby Mk V .300Wby. rifle has about 500 rounds through it.
If you don't have a scope you can get one for about $75 on Amazon - I display on my computer monitor for good pics. Jim
Pic. is a clean barrel of a Weatherby Mk V .300Wby. rifle has about 500 rounds through it.
If you don't have a scope you can get one for about $75 on Amazon - I display on my computer monitor for good pics. Jim
