I have a .308 Win, 15" Encore barrel that suffered the same kind of shooting patterns,
not groups. I sent it back to T/C, and they re-crowned it, and now it shoots factory
ammo 1.5 MOA. I have yet to try load development for it, but I feel fairly
confident that I can get this to shoot 1 MOA, now with the new crown. I don't
know if this is your barrel's problem, but before I'd burn up too much ammo, I'd
call T/C and ask what they test fire for ammo, in a .204 barrel. Get some, and if
it doesn't group, send the barrel back. This cleared up my crappy shooting
T/C barrel to the point that it is acceptable now.
Squeeze