I used my new set for the first time yesterday - Pro Tac Mag Gold NRR 33. No, I didn't pay list price either, they were on sale Black Friday weekend for $250. I wore them over plugs. For years and years I've used Peltor Ultimate 10 standard muffs over plugs and haven't been able to hear a thing.
These things worked extremely well and as advertised. I forgot I had them on. They were warm too; it was 40*F.
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Too many details...
Three of us shot centerfire handguns outside on a short range in the woods. It's a hilly upland setting with small streams and lake. The wind was blowing 20 to 30 and even blew my deerskin gloves off the bench once.
Anyway, without the plugs there was constant hiss from the new muffs, but I didn't notice until I tried them without the plugs. No problem, I'd read a review that mentioned it and I planned on wearing plugs when I bought them.
They worked precisely as advertised. I could carry on a conversation while guns were being fired and hear every word. The gunshots were muffled.
I typed all that to say this...
It was freaking spooky at first to hear the echos rolling through the woods from every shot. Hearing the voices, but not the loud shots was easy enough to get used to, but I hadn't thought about the reflected sounds in the distance. Oh, and we were shooting under a low roof that put your muzzle just under the edge if you were standing. Imagine a small scout camp setup with 4 benches. The Black Hills .357 at 1500 fps really thumped, but the muffs handled it.
And I didn't hear that 20 to 30 mph wind either. I heard the fired cases hitting the floor.
I should have bought these years ago.
John