I've heard this term before...but can't remember exactly what oz a ball needs to be before it is considered a true half weight.  I did a web search and found the definition to be between 3.5 and 8oz's about the requested weight.  Does this hold true?

Reason I ask is that I recently received a 15lb - 5oz Flash Force and thought it was a little high for a 15.

Im going through the same thing, since Im getting new stuff. I wanna get the lightest 15 I can.
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16 years old, and proud of it! Still not mature either!