So, my circumstances have changed...
First: I call BS on the "You have to be a trained professional" line.... They have 16-18 year old kids filling CO2 bottles at the sporting good stores. Trained... maybe. Professional... No way!
Second: Lots of chemistry talk about steel bottles...
So, just a short story on my experiences...
I have been refilling Soda Stream bottles and my Kegging CO2 bottle (5lb) with 3/8 inch pelletized dry ice for over a year now. Things to watch... make sure you don't pinch your gaskets. Weigh out your dry ice. Use a pressure gauge to make...