That stuff is likely close to a half-century old.
My guess is that the ammo would be worth more to a collector than as shooting fodder. Its value lies in its status as the first high-performance handgun ammo using lightweight, jacketed hollowpoints at elevated velocities.
Most fixed, metallic, centerfire ammunition will stay viable for decades (at least), but that depends largely upon how it was stored. Duds are far more likely than blow-ups.
There is no real point in shooting it. It's a waste of its potential collector status to use it for plinking or practice. As carry ammo its performance has long been surpassed by any number of modern loads from any of today's manufacturers.