Thanks for the feedback. I have not tried a wad.
Looks like I'll need to go back and try a hotter load. The accuracy was exceptional with 65 but I may need to give some up for additional power.
Prior to prepping for this hunt, I had vastly underestimated the joy of shooting heavy lead. I was all about speed and sabots. This has been a real eye opener. Honestly, I can shoot as good or better groups with 460 - 535 grain No-Excuses than I can with any saboted load.