I've got one on my backup .308 and it works great. Really cuts down the recoil and muzzle jump. I'd suggest loctiting it on though (blue loctite) as I found mine tended to come loose at times which I found to be a pita when shooting matches where you sometimes inadvertently hit your rifle on barricades, etc. That being said, once re-tightened, there was no change to POI but just one more thing to keep an eye on. I've got a Kahntrol on my match .308 rifle now (not self-indexing), works great as well.