I think that possibly this poster has had some very bad experience with either a pro shop or an internet dealer. They have dumped some off-weight balls on him when he has asked for 15 lb. balls. I would think that he had been given balls in that huge range when he probably should have been given balls in the 15 lb. to 15 lb. 5 oz., roughly, before drilling.

Personally, if my driller gave me a 15 lb. ball outside this range (15 lb. - 15 lb. 6 oz.), I would want him to ask me if it were alright to drill it before he even started laying out the ball.

What ball, Bill?

okay more info

he says its marked right on the box

If you look at the boxes they come in you will see the actual weight and that's where I came up with the plus or minus half pound.

I asked him to post a pic of it.

I looked on all my boxes and can't find anything that says that.