I have a JD 224 xtrm on my 5.6x50r. It’s the only combination I ever shoot without muffs on if I don’t have time. It is truly the crack only. Amazing. My ASE JetZ is by comparison deafening.Hausken seems good.... best I've had so far on the 223.
Sorry absolutely not. The attenuation differs by enough that some are twice as loud as othersThey are all the same,, buy a decent built one that isn’t too expensive.