How about 300 yards? More excuses? I know, I know - thorough test of marksmanship is all about claims, not proof.
http://www.snipershide.com/shooting...ard-bolt-action-6groups-30round-shootout.html I shoot F-Class and Benchrest - 3-4 matches every month year around.
You know what the difference between tactical matches and "punching paper" - single poor shot in score shooting puts you in the bottom with NO chance of recovery, none! In tactical match you can miss completely (even not just once) and still WIN THE WHOLE DAMN THING!
In steel shooting 1/2MOA is meaningless - it is not required to engage the targets nor is it ever measured. This makes me to believe that you have no idea what 1/2moa means, which insults those who do know what it means and what it takes.
I have no doubt that the take-off barrel you are selling is just fine; I just think the claims are unreasonable, and without proof the BS flag must be raised.