Which term describes a younger cattle carcass, typically in the weight range of 780-850 lbs.?

The term that describes a younger cattle carcass in the weight range of 780-850 lbs. is "Heifer." Heifers are young female cattle that have not yet borne a calf, and they are often processed for meat when they reach a certain weight. In the beef industry, heifers are typically valued for their tenderness and flavor, making them a common choice for various cuts of beef.

While steers, bulls, and culls represent other types or classifications of cattle, they do not accurately describe the specific younger cattle carcass mentioned in the question. Steers, male cattle that have been castrated, can also fall within similar weight ranges, but the focus on the term "younger" and the context of gender points specifically towards heifers. Bulls, on the other hand, are intact males that can also be heavier and are generally not classified in the same way for meat processing. Cull refers to animals that are no longer considered useful for breeding or production, which would not apply to the term being inquired about in relation to younger carcasses.