Originally Posted by
rockytop
Breaking in a barrell is a myth started by gunsmiths that make barrells commercially. The more rounds they can get you to shoot through their barrell breaking it in, means it wears out quicker and you get to buy another barrell from them, especially in the larger calibers. It's all bs.
If barrels wear out by chooting them then breaking them in is not a myth.
Its not rocket science, 100 rounds down the pipe smoothes things out