Re: y the misfire?
I bought a new 686 .357, fired .38s all 50 no problem. Loaded up the magnums and out of 50 I had 7 fail to fire. I talked to my gun guy and he suggested one adustment for the hammer to hit harder. And to switch my ammo to a "softer primer". I was using Magtech (sp?) he said to use Federal, they have a softer primer. I would say to try different ammo, thats what I will do first. The ones that did not fire also did not seem to have the primer hit as hard as the other rounds. Hope this helps.