Individuals will vary. I favoured a quite strong grip ( not quite a death grip) and it worked well for me. I also held on aim for much longer than conventional advice suggests but again it worked for me. This is not advised for heavy recoiling guns - when I moved on to .357 magnums I got tennis elbow and found that a much more relaxed grip was the ticket.
Experimentation will help you to find your personal style, but do give it a fair go before changing anything - it takes quite a while to get the best out of any grip or stance adjustment.