delbert you're pretty good!
I do my own processing just because the 1 time I had a commercial shop do it and took a tour of the place i knew right there I had to do my own. They would grind burger into a very large vat mixing with other's deer, and I also got about 1/2 the weight I should have.
sounds like you went to the wrong place.Check out other processors.The one I use is a very good guy and does one at a time no mixing yours with others and always feel I get plenty back for what I take in.There is always a bad one of everything,Dont judge them all on the one bad one.
Born on a mountain raised in a cave huntin and fishin is all I crave