This is just ONE calf, but we had a nightmare with him. Bought a bred heifer (for a recip, an Above Par x KSU Miss Too Black) with decent EPD's for calving ease (IIRC, she was a 7, with a 0 birth weight). Bought her the end of September out of Kansas sale, but did not take possession until at the Royal (seller brought her on his trailer and we just transferred her in the parking lot). She calved the end of December, on time (two days early) and had a 118 pound bull calf, dead. We had to have the vet out to get the calf out, and she was down for several weeks after the awful ordeal. Out in the middle of the pasture, in the middle of a cold winter, and we had to drive out there twice a day to feed and water her. Thank gosh she pulled out, and slowly regained the ability to walk, and went straight to the market. Good thing is, the breeder replaced her with a fall weanling, so we were not out much (vet bills).
So I am a little gun shy with RCR Stetson. We were just as shocked as the breeder, since he is calving ease and she had no history of calving ease problems in her pedigree. She was not a show heifer, not even halter broke, on Kansas pasture all of her life, and just on baled fescue when we took possession of her. So it was not a feeding issue.