This is not a question/rebate about how many rounds can you put down the pipe on a 22-250 before its "shot out" and long range accuracy is still there, but not as good as you want it to be. (loads have been altered as necessary to retain accuracy over the barrel life)

For all intents and purposes we will say the barrel is "shot out" at 2,000 rounds on a McGowen, Shilen or other quality pre-fit barrel.

With 10-20% of the barrel life used for load development, zeroing, gun tests, weather tests and ballistics table verification, how many people order a 2nd barrel so you have higher chances of having a matched chamber and bore to the pipe you used for load development?

I know there is a lot of variables to this question (hot powder, abuse, rounds per year, did they actually run two barrels on the same reamer with the same smith, etc etc etc). I am looking for how many people order two at once in hopes of the replacement pipe is a match.