That's awesome. I rolled an average of 142 at best, using my Dad's ball. It didn't fit. My buddy had a ball with finger holes splayed WAY apart. My first game with that ball was 227. Second 180 some. Third 210 or so.
My claim to fame was with those stand up video games back in the 70s and early 80s. I got 3,145,690 after 4.5 hours at PacMan. Donkey Kong high score was about 825,000. Trust me, that's a lot.
Also, it was my pleasure to share lead trumpet in the best high school jazz band in the Washington State in 1981/82. If we needed power, we went with Rich. If we needed style, we went with me. Both of us could hit double G's, but Rich could really hit them LOUD! We actually had ourselves recorded in a studio. I still have that cassette!!!!