Soak overnight in a solution of 4 tbs. vinegar with a slice on onion. Then pour off the soak water, rinse and dry the meat, and cook as usual. If preferred, you can soak again in milk, buttermilk, etc..
Are you sure that you got YOUR meat from the processor? At the height of the season, processors are taking in carcasses faster than they can process, them. Some processors use the bulk processing method, and even though you brought in 60 pounds of meat, you may not get back the same sixty pounds that you brought in. If you have had the dubious pleasure of looking in the processors freezer, you will see it jam packed with deer carcasses. The carcass you so lovingly cared for by quick field dressing and transportation to the freezer is jammed up against a gut shot carcass that the hunter rode around in his truck all day showing it off to his friends. Once the carcass leaves your possession, all bets are off as to quality, and that you will receive the same meat that you brought in. Better to process it yourself, or take it to a processor that you know and trust. This was told to me by an old Colorado taxidermist.