I purchased a 40S&W barrel for my 357 sig. Swapped out the barrel and headed to the range. The new barrel would not group. I was horrified with the accuracy. Older gent beside me tells me it's ok, the barrel has to break in. A few mags later the gun actual shoots better and I can hold a decent group. Anyone else have this type of experience. How many rounds before it gets broken in?
switching calibers, barrel break in?
- Thread starter Noreaster
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