Jason let me test some when I was playing with him at Dragons Lair. Thought they were great then, so I purchased 2 bottles from him.
I don’t snipe often so the bottles were open in my room for about 6 months... went round to using them, couldn’t get the SSG to feed at all, tried with a few mates in different guns no luck there either.
Team mate then found out the place he gets them made(you’ll know it no doubt) and he searched the manufacturers name and found that there was history with swelling. He tested the size of the BBs with a (not going to pretend I can spell or get the name right at this moment) and found the BBs had changed from 5.95+\-0.0.1 to roughly 6.05 on average...
I will admit I didn’t tell Jason, at the time I wasn’t thinking about letting him know, just moved on to a different brand. In hindsight I probably should have spoken with him.