I don't take any chances. If I am pistol shooting, I use foam inserts that rate about 32-33dB and then I add electonic ear muffs over those. Especially when I am indoors. Reverb is a bitch.
When I am shooting my rifles, it's always outdoors and I always use my foam inserts. IF
I can also get behind the trigger with my electronic ear muffs, I use them.
Your hearing is an amazing resource and needs to be protected.