Peltor Tactical 6 has scallop in the shell which avoids the interference problem. I shoot low gun skeet and have never had a problem mounting. If they arrive with the scallop at top, it's easy to flip earcups to place the scallop down. They also allow conversation thru the filter and so are trapper friendly if you're pulling or just jabbering between stations. Lot of better, expensive, bragging rights stuff around no doubt but these are usually discounted between 60-80$. I've had mine for 9 yrs. and they have proved durable. There's also a variant with a "behind the head" bow if you don't like the standard on top of the cap look. I despise ear plugs of every persuasion!!!! My ears spit em out regularly.
jack