Brass catcher

[Major Tom]

My 30 caliber Luger spits out the ejected brass like a shot from a cannon! They easily go over my right shoulder and about 20 foot and lay in a space of 10 foot diameter. What would be a good brass catcher? I usually loose 10% of my brass in grass, weeds and river rock. Plus having to pick up brass around other shooters feet is not always possible.