If it's a standard vanguard, it's not glass bedded. It just has palstic sandwiched between the reciever and floorplate. And the barrel does put pressure on the forend. I want to say that I read 17 lbs of pressure somewhere, although that sounds high. I have a Vanguard in 300 WSM, and had similar problems. It seemed like 2 out of 3 were always tight, and one had a mind of it's own. I don't think a cheap plastic stock puts consistent pressure on a barrel as it gets hot. Plus, it's affected by pressure on the rest, sling, and side loads. I switched to a pillar-bedded stock and free floated the barrel and it made a noticable difference. For what it's worth, my handloads consistently shoot under 1/2" at 100 yds.