I used some purple/white (with white fill & advantage shell) PMI Premium a couple weekends ago. On Sat, they worked okay, though they blew up more than the Big Ball that I usually shoot. The next day, it was blowing up left and right. Though it was 5-10* colder on Sunday, so I assumed it was the cold temps (~40*) that made the shell brittle.
I was using a superbolt on both days. Unfortunately, I left my foamie bolt at home, so I couldn't switch bolts on Sunday when I was having all the problems.
I was using a superbolt on both days. Unfortunately, I left my foamie bolt at home, so I couldn't switch bolts on Sunday when I was having all the problems.


although at the time it just didn't seem so.

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