My 597Mag feeds very reliably. The only ammo that dosen't feed well is the CCI 50gr GoldDot load. It will hang up if there are 5 or more rounds in the 7-shot magazine.
Mine is very accurate as well. I did have to glass bed mine after I put it in a Boyds laminated stock. With the Glass bedding and stoning the trigger to about 2.5lbs, It will shoot moa at 100yds with the Winchester 40gr HP and Remington-Vmax 33gr ammo.
I also have a 597 in .22lr. With two of my 3 magazines it will occasionally fail to feed with some ammo. With CCI minimags, it's 100% reliable. Also, I have a 30rd magazine that with "full powered" high-speed LongRifles will feed 100%.
I've never taken down my action, however. If you do take yours down, don't over torque the action rods holding the action springs. If you do, they can bind causing malfunctions.