Actually you've asked two questions here....

Did Browning make a drilling?? (drilling = 3 bbls.) I don't think they did, but they may have rebadged a few Sauers, or some other brand like Weatherby did..

Did they ever make a combo?? (combo = 2 bbls.) This is more possible, but i don't ever remember seeing or reading about one of these either...

DM