Chilling your tank before topping off

For what it's worth, I use an Omega Supercharger for my Brancato Great White and have been filling to ~4700 psi cutoff which cools to just over 4500. But I made the newbie mistake of leaving the full tank in my car on a not-even-terribly-hot Texas day (windows open, sunshade on the windshield) and blew the 5.5k burst disc. Luckily it worked as intended, no harm done and a cheap repair but I admit it did sphincter me up a bit!