I don't remember if it was an 88 or a S99 now, but several decades ago I did accurize one, with good results. So it may well work for you, also.
I did not mess with the trigger, just glass bedded the stock and forearm after cleaning 30 some years of gunk out of everything, including the bore. The guy had gotten it from his father, who had bought it new, and neither had ever cleaned it. He brought it to me for "fixing" after missing a whole moose at 40 yards.... and that's not easy to do!
After complete disassembly and cleaning, it still shot 5" groups at 80 yards - the extent of my range at the time - and about 3 feet to the right. Glass bedding brought it down to repeatable 3 shot cloverleafs or almost, with iron sights. Drifting the rear sight all the way left and front sight all the way right took care of the rest. Looked funny, but shot accurately. And he was happy with it that way. I would have done something different had it been my rifle.....
Good luck with your project.
