By recoil operated, I can only assume you mean a Browning Auto-5. The Benelli's are often mislabeled recoil operated when in reality they are essentially blowback operated, but not blowback. More properly, I think you would call it an inertia lock.
At any rate, there is no functional difference to warrant a call on this. Semi-Auto shotguns are notorious for being finicky with some ammo. If this person intends to defend his life, he might consider a few hundred rounds with his chosen load prior to considering the weapon safe.
Frankly, I would and do stick with a pump action. My judgement on that.