I have found these to be very good - http://www.auritech.co.uk/universal-fit/shoot/
Some interesting supporting information is also on their website.
Some interesting supporting information is also on their website.
First, Mattin52,
These British plugs at almost $30 are similar to the Etymotic ER-20 or Ety-Plug. Only difference, the ER-20 has WAY better fidelity, the same (but more exact) 20 dB attenuation and only $10 street price.
Etymotic does not recommend using the ER-20 for shooting as the attenuation is only 20 dB. However using them under muffs is a different matter! Muffs are actually un-safe by them self as the models popular with shooters have a maximum protection of about 28 dB. With ER-20 plugs under them, the attenuation jumps to 38 dB or higher and fidelity is still good.