Are you shooting a longbow or recurve? I shoot a longbow with a tighter grip - firm but not a death grip - seems to help with any handshock. Might go a little lighter on a high wrist recurve. One thing to avoid that a very good archer taught me is that even with a sling, a lot of folks will shoot with a loose grip but will, in actuality, "grab" at the riser at the shot. He recommended that even with a sling, a complete but light grip would work best for most folks.