Brother had one that shot to the right with the bayo folded and to the left with it extended. The action and barrel moved quite a bit in the stock and when we looked at it there was enough room in the stock of half another action, so we bedded the action and barrel (to the end of the chamber) and although the groups tightened right up it still shot left and right with the bayo, so we took it off, all of it.
We removed the bayonet and ground off the mount, right down to the contour of the barrel, or as close to it as possible without screwing things up - did a pretty good job, too. Anyhow, once we ground off the lug, which 'equalized' the barrel, we found that by adjusting the sight a bit we could get very decent dead-on 2" groups at 50yds with all sorts of ammo. He took it on a hog hunt in Florida using the Silver or Brown Bear heavy slugs, 200 or 203 gn, and had no problem what so ever dropping hoggies as far as he could see them. He sold it later, but was pleased with the results. HTH and Good Luck.