I just keep reloading until I see a crack...usually 6 to 9 reloads per hull. Never had an issue...RCBS Grand press.
Many hull snobs will not fool with the steel rimmed Remington hull. Myself, I am not burdened by that restriction and load them with no reservation.and am pleased to do so.They're the most durable hull you can reload. Some people have issues with the steel rims. l don't
I remember that article. If my memory is correct it appeared in American Shotgunner when he wrote monthly articles for it. Some of the hulls had some slight increases in velocity after time. When that article was written, in the late 1970’s shot was around 15.00 bucks a bag when Winchester and Remington hard shot was readily available.When Tom Armbrust did this test 20-some years ago he found little if any appreciable change in ballistics over the life of the hulls. It's difficult to tell how much the composition of the plastic used to make hulls has changed over that time or how much effect it would have on the subject but it's an interesting history lesson anyway.