S&W makes mention that their current 38 Spl +P J frame Airweights (642, 637, 638, 442, etc) are made for continuous use with +P ammunition. What exactly does continuous use mean, 1K, 5K +P rounds?

I’ve shot in one J frame Airweight (2018 manufacture) at least 1K rounds with at least half with +P 158 gr SWCHP loads without any problems. Action is still very tight.

Appreciate your inputs on today’s S&W J frame Airweights and their durability with +P ammo