Do you plan on submerging them in water?????????? I have metal cans and have had no issues with them. As far as the plastic cans go, if you do not plan on letting them sit in the sun day after day, I would say you'll be dead before they get brittle under normal use. Just my opinion
NRA Life Member, NRA Range Safety Officer, IDPA Safety Officer, USPSA NROI Range Officer
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