Blarney. You can get .17 HMR ammo any place worthy of selling ammo, period. Just because Remington had problems with the 597 is no reason whatsoever to quit selling Marlin and Savage boltguns, or any other boltguns, for that matter.
Most, if not all of the troubles with 597s comes from not cleaning the guns on a regular basis. Eventually, the chambers get dirty, and bolt doesn't close all the way, and you get a Kaboom. Had Remington engineered the thing NOT to shoot without the bolt being completely closed, it probably wouldn't be an issue.
In all honesty, that's not a gun problem, that's operator error.
As usual, Bass Pro has staff that oughta be selling plywood and nails instead of guns. They get some punkinhead in there blowing smoke about something he isn't qualified to shoot, let alone advise buyers about. That's a different thread, though.