I've not gotten the change to draw blood with my IMI, but it has seen field use as a back-up. Great little cartridge for a semi-auto (we sell it BTW
), I'd make sure on the red-dot that you call the customer service and verify that they will warrenty the sight if mounted on a 45WM. I just rand into a problem with a customer that bought a scope from us and ended up not being covered as it was mounted on a heavier recoiling gun than it was rated for.