I'm probably the guy you are referring to re: Chapuis UGEX 9.3 x 74R and accuracy. The problem with my rifle was rough bores. After 2-300 rounds they smoothed out sufficiently that the barrel dwell time changed and the barrels crossed by ~5" at 100yds. Initial accuracy was wonderful ( 2l,2r in ~ 1" @ 100 yds.) but teh accuracy slowly deteriorated with use. It has now been re-regulated by JJ and he thinks that even if it smooths out some more, the regulation change(s) if any will be minor and easily adjusted with loads sith little velocity loss. Based upon my use of the rifle the last few range sessions over tha past week or so, I suspect he is right. It is still fouling, but not as badly as originally. My rifle now regulates with 286 gr @~2300 fps. Accuracy is better than I am currently holding, so I can't give you the particulars, but I suspect it is less than 2" for 2 lefts and rights @ 100 yds. More likely it is in the 1 1/2" range. I can tighten them up by changing loads, but am not satisfied with the shooters perfromance right now, so changes in loads is pointless at this time. FWIW Pilgrim