They are right 305 X 10 DL is a mans exercise!
Here is a thread on the training I was talking about. It is a little different but laid out by one of the all time great grip strength guys David Horne.
http://www.gripboard.com/index.php?showtopic=12608
It is on the gripboard and you have to register to view the forums. I don't post there but man there is a ton of information to read. It can get quite overwhelming actually.
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What we think, or what we know, or what we believe, is in the end, of little consequence. The only thing of consequence is what we do. -John Ruskin
http://westvolusiawellness.com/