I am a bit new, a few years doing this, and I don't raise a lot of cattle, maybe twenty per year, but...I just have an affinity for large framed cattle. I use the biggest females I can get that are still put together properly for the breed. So far not one pulled calf from a big heifer. My angus steers that I have done the best with were the large framed ones. THAT said. I sell my cattle for custom cut beef, private treaty priced, , and we feed them all the way out ourselves birth to the slaughterhouse. I get the larger framed cattle to my target weight faster, and the yields seem to beat the smaller framed cattle I have killed in the past. I know it is expensive to feed, so the thing I select for more than anything is high early weights. I have an opinion , right or wrong, it gets me where I need to be with LESS feed because of the difference in "time on feed". I pull them individually for slaughter which allows me more latitude to cull one that is doing a poor job of getting where I want him. I usually eat those at my house. I don't run close enough books to tell down to the ounce what the ounce cost me to produce. I sell more in concepts like " big, highly marbled, and dripping ribeyes!!!" I do know this. Telling a client they are gonna have moderate sized steaks, and less HB is harder for me to sell than "giant steaks and a tub full of HB". I like big angus cattle!! All operations are different, big works for me, actually prefer extremes. I sell to end user though, not a guy with a grid and an idea how to pay me less. I get a premium for my big or near giant cattle-- novelty sells as do two and half pound porterhouses!!! Makes me hungry thinking about it!!! Good luck, and have fun! !! I get that watching my big old calves become giant steers!!!