I'm 46 and have been using 15 for about 8 years. Immediately my average went up about 20 pins. Most guys will release a 15 lb. ball better than a 16. More revs with less effort, as well as less wear and tear on the fingers, wrist, shoulder, etc. Advances in cores and coverstocks have also helped.
If a bowler would release a 16 as well as a 15 he should stay at 16, but the vast majority of bowlers don't. Out of all the balls our shops drill, MAYBE 5% weight 16 lbs.
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Lane Carter, Strike Zone Pro Shops - Salt Lake City, Utah
Brunswick Amateur Staff