Not sure about all that brain scrubbing youth stuff, but, here's a nearly free, basically scientific, 4th of July friendly, effectiveness load test, of ur bear stopR pistol rounds. Take a couple of used, surplus, empty, 5 gallon plastic oil pails with the tops removed, for this test. Need an open area away from buildings, where nothing can burn, like a plowed field. Fill the bucket with water within a couple inches of the top. Put that 5 gal water bucket on a 3ft step ladder, so it's up off the ground. Get back 20 yards or so and fire ur test round in the lower 1/3 zone of the pail. .Hydraulic pressure denoting a decent stopper round , think ,12 gauge deer slug, will empty the bucket in skywards water blast. The 4th of July part of the test, is add about an inch of gasoline on top of the water, carefully light that with a match. It will just sit there and burn. Step back minimum of 25 yards, and when the water launches ya get about a 10 foot diameter fireworks display,works best in nearly dark conditions, that remains intact for a few seconds, then disappears.