Howard leight impact sport 22db only - Howard Leight Impact Sport MultiCam Electronic Earmuff

I have 3 pairs of these for my family, and they only provide 22db NRR 22, if you shoot a .308 its at about 165db so you would still be in the ear damaging range, the only solution is to wear double protection, I wear the Howard Leight Max-1 foam plugs at NRR 33, plus I wear these Impact Sport Earmuff's NRR 22, with the volume turned up so I can hear others speak too, and still have decent hearing protection.