Update on the MPA (Masterpiece Arms) Competition Chassis. I tried to make notes on the images. It's definitely not a drop in fit. I'm trying to decide if I should try and get a machine shop to modify as needed or just use the chassis for a regular Tikka CTR. I'm not sure if MPA would be interested in having me send both in so they could fit it and also gather information so they could make a T1X friendly chassis. I would think they could modify it to work with both these and the CTRs.
Why not just go at it with a dremel to fit it? Those cuts you discussed shouldn't cause issue with the CTR working.
On checking Mag fitment, if you pull the magwell, do you have any issue getting the mag in high enough to touch the bolt? od does the mag well need cut also?