I have a T3 in a CTR stock with the higher comb ( non-adjustable ) in .308 Win, with a Vortex Diamondback 4-12x40mm with fine duplex with BDC hashes. Every round I have tried has shot into groups smaller than 3/4 inch.
But the, my T3 Lite .30-06 does the same.
It is asking a bit much to expect a stalking rifle to also be a match or long range fun rifle, but for the money, the CTR gives you choices of barrels, threaded muzzle, lighter weight than a T3 Sporter. You might want to consider a T3X Light or Forest, and buy a take off CTR stock, which is also pretty light.