Bergara not shooting like it did HELP

[280ai]

Bergara B-14 hmr Sheels special 24 inch heavy bbl in 6.5 creedmoor. Vortex pst gen, 2 triggertech primary. I use it for PRS competion. It is well cleaned about every 200 rnds. About 1000 rnds thru bbl. Gun was shooting half moa until about 100-150 rnds ago with a Harrels brake or a Supressor now I am barely getting 1 moa. But my load using Sierra 107 tmk shoots the same 1/2 or less moa no change. The load is Hornady brass Fed lg rifle primer Hornady 130 eldm all same lot over 44 gr Staball. Because of mag restriction I have oal set at 1.790 using a compurator. jump from new was .045 by my measurements I have .020 throat erosion. I have cleaned back to shinny bbl shot 10 to foul and then 10-107's got 1/3 moa then 5 130's same 1 to 1/4 moa! My soution is to try setting my oal .020 longer in .005 increments at that point I will be out of mag space. Any thoughts from the hive? Thanks for any input.

 

[6.5 forever]

Have put a borescope in the barrel?
As barrels wear you may need to adapt your cleaning procedure.

 

[jimmymac]

If you have any additional room in that magazine, maybe try seating the bullets .002 or .003 longer than usual and see if it comes back to life. Can’t hurt to try a few groups like that if your setup allows it.

 

[280ai]

yes i scope the bbl often its starting to fire crack but nothing serious. Adapting the cleaning is a top thought. I was thinking to seat longer in .005 increments but 2-3 is maybe better will try thanks. Last resort Bergara has a bbl replacement deal SS bbl done for 500.00 and start new