There are tons are papers and information about ear pro. Foam ear plugs only reach their stated NRR when used exactly as they are supposed to. People think that from ear plugs are so simple, yet in seeing hundred of people use them, I could probably count on one hand how many did so. Those foam ear plugs rolling in your pocket and put in quickly are most likely offering about 15 NRR at best. If you can hear someone talking with them inserted, you’re not doing much. The shooting world is full of people with permanent hearing loss from shooting even while wearing ear pro religiously.
I shoot braked guns a lot- tens of thousands of rounds a year. 100% with brand new foam plugs inserted correctly, and very good muffs over. As well, bone conduction is real, and my rifles also have foam or leather cheek pieces to help with that. I also almost always set up something between the muzzle and myself to block it redirect the blast and sound while shooting on a range. I must get a full hearing test done annually and my hearing has not changed in 20 years. People that I am around that only use plugs or muffs- not both, all have measured hearing damage every year.
As for cans, it depends. Unlike ear pro, the can is always working. There is zero doubt that a real suppressor and any type of ear pro- muffs or plugs drops it to true hearing sage levels. On the range I do not shoot without at least plugs. Hunting, no. It’s not needed. One to two shots a day in the open with a real suppressor is not causing hearing damage. Having said that, whenever I have time, I still out in plugs half way while hunting.
Addressed above. Every person I know that shoots braked rifles with just plugs or muffs, has measured loss of hearing year after year. Those who only shoot suppressed and who only shoot around those with suppressors, have no hearing loss each year.
That’s correct. One or two shots at 130-140dB does not worry me- one shot at 150 plus decibels greatly does.
Sure. Hence why I am asking for clarification. Plugs only are not bringing a braked rifle to hearing safe. Plugs or muffs only, with an unbraked rifle are right at the limit. Plugs and muffs when worn exactly correct can. A suppressor for a couple shots is good, or a suppressor with any type of ear pro worn is good for hundreds of shots a day.