the 300 gr 338 cal bullet shot extremely well in my 9.5 tw 5R Obermeyer barrel at 338 Edge velocities,
For the 325 gr bullet I'd run a min of 8.5 tw but 9 tw should work in the 338 Norma, Lapua, RUM, Edge etc ... I am personally getting an 8 tw for long range use and I might convince Dale to make me a run of 350 gr 338 cal bullets to play with in my 338 Wolverine, It has plenty of case capacity for that bullet weight
as for bc's, there is none established yet and quoting computer generated numbers will just **** everybody off, Bryan Litz has been getting all of Dale's long range bullets for bc testing, all verified G1 and G7 bc's will be available once the results are in
Dale uses heavier jackets for his 338 cal bullets, my tests have shown the 300 gr bullets take out 5 water jugs at 50 yards and expand perfectly without core jumping jacket like the Hornady ELDX and ELDM bullets do in similar tests, see pic below