Galloways are great foragers. I swear mine were crossed with goats. Seems they will eat just about anything. I've seen them eat knapp weed, thistles, wild roses, even pine trees! But my Blacks are quite a bit bigger than your Belties. I've got a cow that's a frame 7 and must weigh 1600-1700 pounds. Harley Blegan, president of the AGBA, had a black bull that was a frame 7, 2600 pound bull. The genetic influence on these big animals is coming from Canada. They like them big in Canada. And size is one of the easiest genetic qualities to alter. More typical for solid color Galloways would be beeves with frames 3 to 5. Mature bull weights range from 1700 to 2300 pounds with the average being about 1800 pounds. The mature cow generally weighs from 1000 to 1500 pounds with the average being around 1200. Calf birth weights typically range from 65-80 pounds. I do love my Galloways though. Super smart. Great temperaments. Wonderful mothers. Very easy keeping. I wanted no maintenance cattle and I definitely got that. And they protect each other very well as a herd. Quite aggressive with predators. That comes in real handy since I've got coyotes, bear, cougar, even wolves in my area of NE Washington State.