The area behind the ear is the mastoid bone & it can transmit sound ( vibration ).
So your comment makes perfect sense. How do I know ?? Check my hearing aids that I now have to wear to hear properly.
My ears were ringing after using only muffs. Double up and save your hearing.
I also use the Howard Leight and have found them to be excellent indoors and outdoors around large calibers. I have never had any ringing in the ears or any discomfort from noise while using them.
You can order the Howard Leight from Brownells.
I recently bought a set from them and and love 'em.
Also always have a set or two of plugs with me to double up for the indoor shoots.
Fingers are hard when your shooting, try using someone beside you fingers it will help




























