I played with these brass magnets a couple years ago I thought they worked well.
We have one at our range which is outdoors only and they work pretty good on a grass covered range, though they do pick up mushrooms and rocks too.
CSSA Member
Finally in the military we are going to be able to say "Get me the brass Magnet" to new private and they will be able to bring something back...
They've been using those at paintball fields for years. Same company.
doesn't work on grass
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