With the rise in concealed carry permits across the country and most servicemen being familiar with the caliber the 9mm has eclipsed the .357 in sales, probably by a very wide margin.

But I doubt that the .357 Magnum is going away any time soon. It's like saying pickup trucks are obsolete and on their way out since so many more Camrys and Accords are sold than pickups.

Gunnery, gunnery, gunnery.
Hit the target, all else is twaddle!