https://pistol-forum.com/showthread....-mm-Duty-Loads
My first choice would be the 5.56 mm Federal 62 gr Trophy Bonded Bear Claw (TBBC) bonded JSP (XM556FBIT3), followed by the 5.56 mm Winchester 64 gr solid base bonded JSP (Q3313/RA556B) developed for the FBI, along with the outstanding Black Hills 5.56 mm 50 gr TSX loading, and the Hornady 5.56 mm 55 gr GMX.
I would also be OK with the .223 55 & 62 gr Federal bonded JSP Tactical loads (LE223T1 & LE223T3), along with loads using Nosler 60 gr Partition JSP, Remington 62 gr Core-Lokt Ultra Bonded JSP (PRC223R4), .223 Federal 55 gr TSX (T223S), .223 Horn 55 gr GMX, .223 Speer 75 & 62/64 gr Gold Dot JSP's (and identically constructed Federal 62 gr Fusion JSP and Federal XM223SP1 62gr Bonded JSP), along with loads using the Swift 75 gr Scirocco bonded PT.