I did homework on the old BJR bulls and it looks like the buffalo butts made some real nice cows and calving ease and udders have stayed with the generations. Derivative bulls have a lot of muscle, but retain the maternal genetics...?
However, I do not think Rollin Deep has much to do with this breeding, so this is all tangential.
BJR Make My Day 981:
The outcross choice to add marbling to any pedigree.
Make My Day daughters have well shaped, snug udders with small teats.
http://bullbarn.com/angredepd.asp?ID=358
BJR Payday
BJR RAMBLER 5162: Rambler is known to be one of the best female producers in the breed. He was originally purchased from Bootjack in 1992 by Green Mountain, Van Dyke Angus and Accelerated Genetics as a proven sire with daughters in production. His daughters were so impressive, the decision to purchase him was easy! Besides his beautiful females, Rambler consistently sires easy calving calves.
I can't find a picture of the transition, Rambler 1000, supposedly calming ease/good udders
RED FCC RAMBO 502
RED BJR RAMBLER 5162
BJR GOLDI 355-1122
Sire
: RED VGW RAMBLER 1000
RED LMB UMPIRE 1000-
RED VGW UMPIRE YUMA
BJR GOLDI 355-1122
but somehow they got to this....
Red Crowfoot Rambler 1038L was sold in our ‘02 bull sale to Chickadee Farms. We purchased him back after we saw what he did for Jim. This is one of the heaviest muscled bulls in the breed, extremely easy fleshing and athletic. No matter how many cows he services, or ground he has to cover, he stays thick and muscled. He has sons working in several notable herds such as Bar-E-L , Lazy S, and Chickadee Farms.
Red Crowfoot 83X who was sold in our 2011 sale for $12, 000 to WJ Ranch, is a thick moderate framed son of CBR Rumbler 8586, He is an outcross sire out of a beautiful smaller framed Crowfoot 6004S cow. Crowfoot 83X carries such notable Black Angus genetics such as: N Bar EXT, Basin Max 104J, Papa Optima, Windy Ridge Commodore, Band 234 of Ideal, OCC Moonshine, OCC Joker, Willabar Excel, N Bar Impact, Shoshone PP 7105 and Nugget 801X of JRS. 83X: EPDs are in the top 10% of the Breed for birth weight, milk and stay-ability.
http://www.crowfootcattle.com/sires/redangus/rambler_1038l.html
http://www.crowfootcattle.com/sires/redangus/83x.html