I took my brothers S410 out when he first got it. Now, it was bought off of a well respected member of the AirgunBBS who was a really nice bloke. He said he had recently had it chronoed at just under 12 ft lbs. We had no reason to disbelieve him.
When I went out on my shoot, I came upon a rabbit that hopped through the fence. I was slightly higher, but I sat down and waited for it to hop back out. I could see the rabbit looking at me from behind the fence, but I waited and a second rabbit hopped out. I waited for him to settle, squeezed the trigger and watched as it keeled over and twitched a little on a rear foot, then nothing else!
When I got over to the rabbit, its' head was all domed up at the top. It's wierd, I've seen it a few times before and must be due to massive heamorrhiging (sp?). Somehow, the rifle just felt too powerful. We went down to the gun shop a while later to get it checked and it was putting out at about 15-16 instead of 12! Not much, but that is a third more power than it should have had!
I would very much like to get an FAC and get my Rapid upped and a longer barrel, FAC rifles are the biz!