Admittedly when hunting grouse with my .410 I do not wear ear pro.. Never found the .410 in 26" barrel that bad. probly should tho.
Hi Sumonda: I would urge you to wear hearing protection. A .410 and all shotguns are loud enough to cause permanent and cumulative hearing damage on every shot. (Another reason we need suppressors legalized for hearing health reasons, but that's another topic!)
I use electronic ear muffs for grouse hunting. When walking looking for birds I wear the muffs on the side of my head, off my ears to hear everything with natural hearing. When I see a bird I fumble to place the ear muffs over my ears and press the "on" button, or the switch may be on already.
It takes a while to develop the muscle memory to move the muffs from the side of the head to on the ears. It is not an elegant solution, and in that second or two it takes me to do that I might miss the opportunity for a shot. But grouse are plentiful and there is always the next one.
Most of the birds where I hunt do not instantly flush. They walk or run along the forest floor, often never flushing. So despite my fumbling there usually is time to slide the muffs over the ears. If the bird flushes instantly, the bush is so thick here that usually there is no shot to take anyway. I don't have a dog, but the dog hunters I talk to say they get good wing shooting when using a dog, and with a good bird dog you have more time to set up by watching the dog's behaviour.
My hunting electro muffs are an old Sordin model. They are supposedly waterproof, which is critical for hunting since I am for sure out in the rain. So far they have not gotten thoroughly soaked, so I have not tested their waterproof claim.
The sound quality is reasonable, but the frequencies seem smushed together and hard to resolve. Volume is difficult to optimize. It seems either the rustling of my feet and brushing branches and wind is too loud and overpowers all other natural sounds, or else if I turn the volume down its just not fine enough to pick up the buzzy cluck of the grouse, or the grouse rustling the forest floor as it walks. My human ears and brain with its amazing sound filter can resolve those different frequencies and keep them separate.
The squeeze of ear muffs sideways on my head all day gets to be irritating. The Sordins are heavy as well. Ear muff headache. I sometimes take them off my head for relief and place around my arm. NR -18db is also low. There are better more protective electro muffs on the market now. My range pair elctro muffs are Peltor Sport Tac 500 with better NR and better sound, but they are not waterproof so they don't go hunting. So I am still looking for a lighter, better waterproof electro muff option.