I've owned Tkka T3 in .222, 243,25.06,6.5x55,270 wsm,300 wsm,and .338 Federal and they all had the same barrel contour. You could interchange any of the stocks.
The only difference is in the synthetic CTR stock. The barrel channel is a touch wider in that one. If you want to drop a CTR barreled action into a synthetic T3X Lite stock, you'll need to open the barrel channel a bit.
I enjoy handguns and I really like shotguns,...but I love rifles!