From what I understand, the 250 rd. boxes of Gold Dots are not a stock item.
The story I heard is that they were originally for a large order, perhaps a LE or Government order, but somehow the wrong primers were used. Now, since they had the wrong primers, the rounds were no longer to the specs of the original contract, and had to be disposed of.
Of course, the ammo is still perfectly good, it just happens to have the wrong brand primer in it. Keep in mind, this is just rumor, and I may be wrong.
I have seen it in quite a few different loadings, too. I currently have some 124 gr. and 124 gr. +P saved up for myself. I use the +P for carry ammo.
Great ammo, haven't had a problem with it yet.