JIT, I'll be also waiting for those pictures...
My very first Shorthorn- was a CCS Shoshone granddaughter- she was sired by KKim Frontline, a Shoshone son. Over the years this cow line, has nearly always produced our best calves- despite pure stupid luck and never truly being able to keep as many of them as I would have liked. One thing that this cow family has also done for me- is throw consistently larger birth weights- have no idea where that comes from though- Almost 95% of the time being in the 90-105 lb range. There will be a picture of the granddaughter attached, as well as her first daughter (sired by Kool- only one of the two under 90#s), then one of that Kool daughter and her first calf (story to proceed), and the Kool daughter's latest heifer calf (fall of '11) sired by Byland Mission. Interesting enough, the original Rosemary cow, only produced this one calf- as we never again could get her bred; despite about 6 attempts at AI, and then being stuck in with two different bulls.
Then, a few years later, we purchased an open heifer- who actually ended up being bred to a son of the KKim Frontline bull, and calved at 18 months of age with the 102 lb bull calf pictured last right here on this post (also despite two rounds of Lut to make her come in heat). Due to dumb luck in the age of the dam, and needing something to clean up with- we kept him to breed cows that next year. We ended up getting the Kool daughter bred to this bull for her first time (cleanup)- which made that resulting baby calf a double bred Frontline (both parents being grand- offspring). That 96# heifer calf didn't quite slide out of that first calf heifer-- but it wasn't a hard pull either.
Something that makes me wonder if the birth weigh connection comes from the Frontline/ Shoshone side of the equasion- is the fact that this particular cow (dam of bull calf) had a BW of 69- and then never again had a calf over 80 lbs, and her daughters have never had one over 70. So that puts the double shot, and direct offspring line of that Frontline bull with the larger BWs. I realize the KKim cattle, aren't known for large birth weights- but who knows honestly?