I picked up a 10.25:1 Wiseco Piston for my '98 Big Bear 350 a while back and finally got around to installing it yesterday. I took a before and after compression test to compare the gains if anyone is interested.
Stock 8.6:1:
https://youtu.be/Cy8jKMu3pMk

Wiseco 10.25:1
https://youtu.be/imLl8_mWklw

Total run time of engine was maybe 15 minutes prior to test. I'm not sure but compression may improve over time.