A true pecan p/u (picker upper) isn't a great idea. Most pecans are 2 - 5 times larger than the brass you drop. The wire spacing in a pecan p/u has too much existing spread for anything in diameter smaller than a .45 ACP. The designed brass p/u will have the wires closer together. Worst case, you may pick up some .22 brass with the designed p/u. Our range has three types, tried them all and wide spaced wire types drop 60% of what they pick up. The right one is good on sand, dirt wood, concrete and OK in grass or weeds. If the grass, dirt or sand is wet then you end up with some mucked up brass.