11-22-2019, 11:36 AM
Here is one opinion that you can factor in with the others and see if there is a consensus.
You have invested time and money in the break in and load development for the BCA that will go away if you switch barrels. A new barrel means new testing time and money. To get a dramatic accuracy increase you will need to go to a premium barrel outside your stated $150.00 price range.
The group buy barrel (Monster) is in your price range. The 20 inch monster barrel I purchased to swap with my 24 inch BCA bbl hasn't yet shrunk my groups much, they are in the one inch to 3/4 inches so far, but it was much quicker to get the that level of accuracy than the BCA.
In your situation I would do this:
Find out where the Sierra 120 pro hunter bullets touch the lands. If it is within your magazine length (2.260 to 2.290) load five round at that length, five at ten thou less, five at 20 thou less and five at 30 thou less an see how your groups look.
If where the bullets touch the lands are beyond magazine length, do the same test starting at max mag length.
If one of those groups is not within your accuracy acceptance range and you are certain that it's not shooter error to blame then it's time for a new barrel.
You have invested time and money in the break in and load development for the BCA that will go away if you switch barrels. A new barrel means new testing time and money. To get a dramatic accuracy increase you will need to go to a premium barrel outside your stated $150.00 price range.
The group buy barrel (Monster) is in your price range. The 20 inch monster barrel I purchased to swap with my 24 inch BCA bbl hasn't yet shrunk my groups much, they are in the one inch to 3/4 inches so far, but it was much quicker to get the that level of accuracy than the BCA.
In your situation I would do this:
Find out where the Sierra 120 pro hunter bullets touch the lands. If it is within your magazine length (2.260 to 2.290) load five round at that length, five at ten thou less, five at 20 thou less and five at 30 thou less an see how your groups look.
If where the bullets touch the lands are beyond magazine length, do the same test starting at max mag length.
If one of those groups is not within your accuracy acceptance range and you are certain that it's not shooter error to blame then it's time for a new barrel.