I found the Predator Metalmag pellets at Airgun Source online. They have great service and ship from within Canada.
Here is a photo of two unfired Predator pellets, one Polymag and one Metalmag in .22. Then there are six pellets that have passed through a 1"(measured) pine board. There are three Polymag and three Metalmag. These were retrieved from the duct seal pellet trap behind the board. Great penetration and great damage on the way out.
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