Originally Posted by Festa
When I used Evil all I ever used what .679 because it was generally pretty small. I've recently switched to Valken Redemption and Dye Competition Grade and both are in .684 neighborhood and I've been shooting them out of my .682 Kaner.
My Dye CG was even bigger, believe it or not. I think you're good if you plan to underbore on .684ish, though.