Funny - I remember being trained on a Ma Deuce (M2 .50 caliber happy gun!) and being taught to change the barrels wearing special gloves due to the heat. If the barrel showed little flecks it was way too hot. If the enemy was coming in droves shoot it until it melts! Ahhh.....Army training, always so entertaining!
I do have to ask, though -
The mantra with Airweight handguns is that they are shot a little and carried a lot. What do you gain from shooting an Airweight 150 times in one session? Presumably, 50 rounds, if you must shoot that many, will tell you where the gun shoots for you at close ranges and at distance and/or what adjustments you need to make to be accurate with it. After that, another 100 rounds teaches you nothing and beats up your nerves and tendons and is probably unhealthy generally for your shooting hand.
Call me crazy, but that's the view from my saddle on lightweight handguns, and I carry a couple of them every day, a 642 and a 638. I'm as proficient as I will ever be with those guns without pounding my hands to death. Not trying to be argumentative but those are not target guns made to play with incessantly. Maybe I'm crazy.....