It won't be miserable for you, just for those next to you. I had one on a 20" 308 and while it did tame recoil a little, it really sucks for your shooting buddies. When your first cold bore shot from the prone blows mud, sand grit, and other random Georgia nastiness all over your buddy's brand new GAP hospitaller....well that's just not socially acceptable. Especially when he was ten feet away. I found that my POI shifted significantly without the brake also and I HATE wearing ear pro in the woods, electronic or otherwise. Therefore I shitcanned the brake. Proper fundamentals should mitigate any recoil issues on a 308 anyways.