We have used him extensively. My parents have had about 100 Resource calves now and to my knowledge none have been assisted. BW would avg 90lbs (never had one get to 100lbs) up here in MB, Canada. Daughters are calving now and have fantastic udders and are great mommas. Resource will consistently improve feet and hoof structure, scrotal, docility, fleshing ability, muscling, and fleshing ability. His calves have impressive performance to weaning and yearling weight but slow down after that and are moderate as mature animals (size 5-6 frame). His bull calves typically have slick hair coats. Heifers seem better that way with more than adequate hair. Not many Resource calves have the "show look". He does mate well with Bismarck daughter but I'd be cautious with them getting to the point of too much milk with that pairing.