Jam, or failure to fire?
The 597 has a very small firing "pin" - I've seen other .22's that have a larger pin or better a square firing "block" (those are the guns that will shoot all kinds of junk .22s). I bought mine probably 7 years ago now and had issues with it firing and ended up sending it back into Remington. It's been fine since, but I've also pretty much disregarded it. It's a fun gun to shoot, but I wish I had saved a little more and bought a 10/22. And I even bought mine at a cheap price! But, I also have half a dozen "banana clips" for mine now, so it'll stay around for awhile. It's a truck .22.
My 597 refuses to shoot Thunderbolts or Golden Bullets, funny...I thought the green gun would shoot the bullets from the green box. It shoots Blazers fairly well (the brick I have now), but what I reach for are Federals. With Federal GameShocks, you can do very well.