Had a McGowen in 308 I got through GunShack. It shot every load I put through it half MOA or less. For load dev all I did was pick a bullet and desired velocity. After I sold the barrel to another member here I kind of kicked myself after e later posted pictures of his groups lol. Honestly though, it's hard to get a bad barrel from McGowen, X Caliber, or Criterion etc. It's all in who has what you want and how long you're willing to wait!
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