I'm about to recommend going to an audiologist to have them made, as opposed to the local gun show. The cost is higher, but the longevity and quality of protection is a lot higher. Here are the differences:
- Person at gun show pours the silicon rubber (assumption on my part) compound in your ear and waits until it hardens, and you are done.
- Audiologist pours a mold compound in your ear, sends it to a lab where they make a reverse mold, pour the silicon rubber compound into that and cure it in a bell vacuum jar to ensure that there are no air bubbles in the earplug compound.
- Done at a gun show, there is no way for the maker to ensure that there are no air bubbles (pockets) in the plugs they make.
- Done at a gun show, there is no way that the maker can properly cure the material, which ensures longevity.
- Air bubbles in the compound will NOT protect your hearing, but are not visible to the user.
- Both processes will work, and are better than stuffing a bullet in your ear, but for the marginal cost difference vs. higher quality of protection and longer lasting plugs, the cost effectiveness of a lab produced product is much higher.
Back in my days as a Co-Op Student from NU, I worked in the military-industrial complex and we frequently used the bell jar vacuum technique in "potting" electrical devices that we prototyped. When I worked as an engineer on Polaris-Poseidon Guidance Systems, Raytheon's production line used the same technique in "potting" the modules. What I stated above is NOT advertising hype, the electronics industry has been doing this at least since the 1960s.
Now for my recommendation:
Paul Milner
Hearing Care Center
450 North Main Street (location is Cobbs Corner, junction of Stoughton/Canton/Sharon town lines)
Sharon, MA 02067
(781) 784-1944
(800) 499-2212 (Eastern MA only)
http://www.hearingcarecenter.com/index.htm
Paul is former military, former acoustical engineer from MIT (I didn't realize that until reading his website to type this info), and makes plugs for a lot of shooters in the area. Tell him that I sent you! Paul teaches at a college in Boston, so it pays to call first as he isn't in the office all the time. I don't know if the other audiologists in his office make the plugs too.
My Wife also seems to have a small ear canal and has trouble properly fitting ear plugs, so my plan is to get her fitted with these custom plugs ASAP. I had a pair made a few years ago (cost was $60 IIRC) and they work great.