Generally having a ball that has been drilled to fit your hand will allow you to throw about two pounds heavier. Ten pounds seems very light for an adult. A good pro shop will not only fit the ball correctly, but will also suggest the best weight for you.
I would suggest starting with an entry level reactive resin ball with a fingertip grip to start with. Any money that you can save use for some coaching so you can develop good habits from the start.
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