The fat is what will go Rancid...if all the fat is removed the shelf life of the jerky will depend on how much of the mositure you remove from it..the really dry stuff will last a long time...the more tender stuff not as long...BTW the best way to store it is in a paper bag or in a glass jar with some ventilation in the lid...moisture is the enemy...if its stored in plastic bags condensation will form and then you can get mold growth.,,
Just my .02 for what its worth