I shoot 105grs of loose 3F T7 with the 295gr lead HP Powerbelts in my XR .50, real accurate but I get a lot of leading, the copper plated PBs aren't legal here or I'd use em.
My buddy shoots the 405gr lead HP Powerbelts with 100gr 2f Goex in his standard BD, it's real accurate too.
Neither one of us has got close enough to an elk to see how they work, tho. :roll:
Tim