I'd be curious as to ball speed of the previous two posters. I use my 715 on what I'd consider a pretty mediumish pattern, bumping against the oil line, out around first arrow (though I'm spotting deeper). I have an old Purple Pro Buzzsaw that I use on heavier patterns. But, I'm probably at least in the top three in re ball speed in my house. (no measurement, but somewhere around 20 MPH).