Well, PB, I got good news for ya and maybe bad news and the bad will cost you, $$$ LOL. I did take your OAL and put mine in that area and I even bought the single feed sled from MT and it worked fine. But I did not leave stuff alone & I bought the MDT stock/Chassie along with magazines from MDT, both metal & plastic. It's obvious they added a little of their own tweaks cuz my 88 ELD bullets @ or around 2.50 OAL will fit and function in these mags, I was very impressed and quite happy about it. Anyways here are a couple of pics showing everything, there could even be another hair or two of length still available if needed but I think it should be good where I'm at, but will try less OAL also and see if that makes a difference. I'll keep plugging along and see what I come up with, hope you continue to have great success with your setup, I know I love mine. Have a great week.
Plastic MDT mag on the left, Stock Tikka in the middle, and Metal MDT on the right.
https://i.imgur.com/gxyX4Iq.jpg
https://i.imgur.com/DfE9wfU.jpg
https://i.imgur.com/nPHXk8O.jpg