Freshness problems with Sportsmix Black Bag.

Ive noticed the same thing. Ive been feeding it a couple years now. I feed about 250# a week.
The first year I fed it my dogs did great on it, lots of energy and stamina. I hunted the same dogs every day HARD running, dogs held up great. Then I started noticing the inconsistency stated above. This year i noticed a big difference in my digs performance. They just didn't have enough energy and more than once were just coming up short, and wasn't holding their weight like before, not even close.
ive had this same problems with other feeds also. I just wish SOMEBODY would make a good feed and keep it consistent.
Currently looking for something new to feed. My buddies are feeding plantation and like it pretty good, but heard of a new feed that a vet come out with thats supposed to be meat based, that im going to check out.