I have a T1X coming on Saturday, I'm new to Tikka in general (picked up a .223 Varmint a couple weeks ago). Are these compatible with each other in terms of the stocks, can I drop the T1 into the T3 stock? I have read elsewhere that you can. My questions is I may want to upgrade to an XRS or Bravo for one or both of the guns and both manufacturers offer specific chassis for each platform. How they interchange with each other but are not interchangeable on other platforms? Thanks