Salt Flats, thanks for your compliments. I had to wait till today to show some results. Went to the range and fired 19 rounds with this sporter T99. Took 10 rounds to adjust the scope, then 9 rounds at 50 yds for the record. The groups weren't as good as I wanted them to be . My usual loads for T99s are with IMR4064 , and I was out of it, so I made loads using 50.0gr4831/150grSP. I know this rifle is capable of doing better.
The scope mounting turned out to be fairly easy on this T99. I used the gas vent hole for the forward mounting hole, using a 10-32 tap and screw. The rear screw is a 8-40 on the rear bridge. Just a word of advice that the taps should be new and sharp or you will not get a good threading job. The receiver is very hard. Cutting oil is a must and you should reverse the tap often to let out the debris.
Scope height is OK, the stock doesn't need a cheek piece for a comfortable view through the scope.