You could try what I was told to do by a gunsmith machinist friend.
On my model 441 in .44 special I had the same problem, was using mostly Winchester primers.
He advised taking the grips off and inserting a small washer to fit on the coil spring stem above the bottom bushing next to the spring itself.
After you've done this, put some CCI primers in your brass cases without powder or bullets and test fire them...if they all work good...your set.
Picture shows this area but without the washer inserted yet. Do try it, it worked for me...and I can even use the harder to indent RP primers and they fire.
TB C45