Lots of information mentioned above. I too take a dremel and free float my barrel aggressively. You can take a socket and wrap it with sandpaper and will do the same. I go until I can slide 2 stacked index cards all the way to the action with no resistance. I also too some SS tubing and made pillars, because the washer made into the bottom metal was flexing. I extended them pass the bottom of the stock so that they bottom out on the little washer. Now I can torque to the moon if I like, but I go to 65 now.
Also, I own an older T3 lite , T3x and a CTR that is set into a roughtech stock. None of mine flex with ease as you mention. They do flex, but it takes a good bit of force to make them flex. When / If you decide to sand the barrel channel, Not only do I sand the sides, but I also knock down the webbing inside. Thats why I use a deremel with a small carbide bit to get in there.
100 shots should be plenty good enough for a cold hammer forged barrel. Clean it real good, free float the barrel and I bet it'll shoot, assuming all rings and scope mount isn't loose or have moved. Here are some pics of my SS pillars and how it bottoms out on the washer in the bottom metal.








Also, I own an older T3 lite , T3x and a CTR that is set into a roughtech stock. None of mine flex with ease as you mention. They do flex, but it takes a good bit of force to make them flex. When / If you decide to sand the barrel channel, Not only do I sand the sides, but I also knock down the webbing inside. Thats why I use a deremel with a small carbide bit to get in there.
100 shots should be plenty good enough for a cold hammer forged barrel. Clean it real good, free float the barrel and I bet it'll shoot, assuming all rings and scope mount isn't loose or have moved. Here are some pics of my SS pillars and how it bottoms out on the washer in the bottom metal.







