can't speak for the raptor, but I got a viper g2 and it works flawless.....I've had it about 3 years and use it for rabbit hunting only....it is in 28g......
I got an h&r excell auto a couple years ago. It's very cheap, very light and actually has extremely good reviews. It's only not cycled one time while duck hunting. A friend was shooting it, but 20 minutes later he was shooting his A5 and it didn't cycle also, so I'm blaming it on him. Lol