This thread did not really take off until after I purchased the barrel, so here is what I have found out after the first 15 rounds. IT IS A TOMATO STAKE! I give everthing about this barrel high marks except fit, which is the most important thing. With out a set of pin gages, I would guess the hinge pin hole is around .005" oversized (possibly metric) , allowing the barrel to wobble noticeably and excessively. Rounds 1,2, &3 were OK (I guess) and after that, it shot all over the place. The next 4 rounds held windage well, but showed a 5" random verticle string. The last 8 were all over. This barrel appeared brand new and was cleaned (with very little residue in it) before shooting. I put a brand new Bushnell Banner scope on it, so I mostly discount it as the problem. Needless to say, my first impression of the Bergara replacement barrels is, well, not so good. It is at best a 50 yard rifle. At those ranges, I prefer my old Hawken! I have never seen one of those expandable hinge pins and am not inclined to spend the money on one if it doesn't tighten up the hinge pin hole. I'm planning on putting a known good scope on it and trying it again after this heat wave goes away. Until then, I'll stick to my tack driving PH .223!