I have a couple Howard leight muffs that I have worn for a while now. I thought they were suppose to cut out but I seem to be able to pretty much hear the shot plus every thing else after. It just seems to be more quiet then bare ear. I just picked up a pare of Evo's for the wife (youth size). I dont like the all plastic design but those muffs really cut off even with a clap!! Is there something wrong with my H.L.'s?