i use one on my moss 835. Simmons 30. I love it because it gives me a fine aiming point to use.

Even though my gun came with nice glo-dot sights, I still prefer the red dot over traditional sights.

When your adrenaline is rushing though, that little dot is jumping around quite a bit...only bad thing.

I would just make sure it is shockproof, fogproof, etc. Some seem like their made more for bb guns, bows, or .22's and not big guns.