Originally Posted by
Nomercy448
It’s exceptionally rare - to the point of being the exception to the rule - to have a barrel improve in accuracy/precision by any break in procedure, especially a hammer-forged factory barrel such as that on this Ruger.
I can be convinced of an effort to lap the bore by firing and cleaning for 25-75 rounds then leaving the copper alone after that, such the bore is conditioned for easier cleaning in the future, but this advantage is tiny to the point of being nearly imaginary.
Mercy - Thanks for the input. To be clear, this Ruger No 1 in 270 Weatherby, is unfired, NIB, so I have no starting point or baseline for accuracy. Some shooters believe that cleaning after each round during break in will help the rifle realize it’s potential what ever that may be. Others do not believe it makes a difference.