For freezing anything, meat in particular, the biggest culprit in freezer burn is air entrained with the contents.
Vacuum packed meat will keep easily for two years (or more)in a decent freezer. I have also found an "overlooked" package or two. Vacuum packed stew-meat from 2010 looked, smelled, cooked, and tasted just like it did five years ago. I think that one was a new household record for us.
Meat products like sausage are a bit tougher, depending on how it's processed. Some folks add ice to the grind to keep the meat cold, reduce the amount of suet trim required, and to help blend in seasoning, but the problem with using ice is a reduced "shelf" life in just about any freezer... At least, that's my experience with some ground meat products.
Started out butchering critters on the family place when I was old enough to wrap & tape. Worked a butcher shop through Jr. High & H.S. The reason so many shops use the butcher wrap is strictly economics - speed and convenience - not necessarily food preservation. One of the best things to happen to home meat processing was the vacuum sealers, IMO...