Advice on AR for hunting

[Y85]

Sorry, too many plane flights and too much IPhone typing. You are correct, my DPMS 338Fed is AR-10, not compatible with Grendel. I was wondering what folks thought of the DPMS Oracle lower (5.56) as a base for the AA fluted Grendel upper (too keep the weight down). I don't have a 5.56 (yet) & I was going to try to convince my bride that I had to buy a complete 5.56 rifle so I could put the 6.5G upper on it.

Along those lines, what type of trigger to you all prefer for a hunting AR-15? Do you prefer muzzle breaks on 6.5G?