This bull was used in the Glenariff in England and is now in Ireland in the Ricketstown herd. The Uppermill herd is the oldest breeding herd of any breed in the world, but it was sold in entirity a few years ago to a breeder in Ireland. The Uppermill herd name continues on today with a new owner and a new country ( Ireland). I have been trying to pull his pedigree up on the UK registry, but for some reason I haven't been able to get it on my computer tonight.
I think I could guess at some of his pedigree but am not going to do that until I find out his pedigree for sure. As far as using a bull this big on a cow herd, I suspect there are no major issues. I expect he is not used on heifers. I had a Rodeo Drive son ( HC Merger 93M) who was well over 3000 lbs and he bred the cows easily and we never assisted a calf born from him. I still have some daughters in our herd by Merger, He developed degeneration of his testicles so I had to sell him, and he weighed 3170 lb at the sale barn after an overnight stand, so he would have weighed over 3300 lb if you add just 5% for shrink.
Uppermill Beggar has tremendous length, and an excellent rear quarter. He appears to be very sound on his feet and legs and appears to be veryu smooth made for a 10 year old sire of this size. I suspect several hundred pounds of his weight comes from his extreme length. I was always told that you added about 70 lbs to a 1200 lb steer if you added 1 inch to his middle. It would be much more than that on a bull this size