Your service is quite good. However, as I have told you a couple of times already, this .50 BMG API pulldown bullet really needs to be sized before it is loaded. The two-point neck crimp used on this military round squeezes the bullet considerably out of round. At the point of the crimp it is near spec at about .510. From there the bullet becomes oval-shaped and increases in diameter to as much as .525 at it's max diameter, which is .015 over recommended spec. I wouldn't shoot a bullet that much over spec. Evidently some shooters do it and get away with it. I suspect some are getting an over-pressure situation and don't know it, especially in hot weather. I push every one of these rounds through a Lee resizing die and they shoot great at a perfect .510. In your ad I would recommend you make your customers aware of this out-or-round condition.......Gary