[tim-tim]

We found during the build season that the balls can vary depending on air pressure and how they have been used and abused.

At the competitions (Chesapeake and Buckeye) it did not seem that the balls were inflated to 9psi because they were not nearly as hard as the ones we used at the shop. It never made sense to me why a ball rated for 6-8 psi was inflated to 9psi...safety issue?

But to answer your question better - we saw 27.2" - 27.9" range