When I used Angus that is about what sizes we were weaning. Our Corrs ran 700-800 lbs. The Mexican fighting bull cows I had til this fall, were no taller, but a lot heavier. Probably approaching 1000. Had the occasional LH cow that would weigh that, but they were bigger, taller and leaner. About 2010, I think, we started using a lot bigger and better Brangus bulls. These were my partner's family's bulls, 5 figure to nearly 6 figure registered bulls... a lot were from the Salacoa Brangus line. That's when we started weaning 500lb+ steers and 450+ heifers. We never worm or vaccinate or treat for flies, etc, but, they are on 25% protein kudzu February til November. Nov. til Feb. they are on corn, beans, peanuts and cotton residue. We wean at about 6 months...how about you? The Charolais will wean you a lot bigger calves than your angus has, but won't do better than Brangus or Ultrablack. Plus, you lose a lot of cents per pound due to their color. Do you ever get scurs? Or horns?