Maybe you aren't doing the cost calculation correctly? You can use this calculator
link. For costs of components I suggest you use
Powder Valley costs. If you can still buy new for less and are only reloading to save money, don't reload.
But I just can't imagine you can buy any current commercial 308 ammunition for less than 2X the cost of your reloads, after you factor out the cost of the brass. Once fired 308 brass can save you quite a bit also.