In my experience, all standard (i.e. not precision ground) hex stock has rounding of the points. That is to be expected. How much rounding can vary, but the overall effect should be a nice, deburred corner. Something that drastically changes the overall hex profile is unacceptable.
I might also add this. All the hex stock I've encountered has a uniform rounding of the points. Your description implies a fairly dramatic variation. That, I would find very odd and could be grounds for refusal. Definitely worth a point of inquiry, IMO.
Edited By MyrtleLake on 24/04/2016 21:12:41