i dont realy know much about them but as far as i know thay are very good guns.
as far as killing rabbits at 50 yrds stone dead not to sure bout that but then again
some people can and some people carnt so i think that is down to your shooting skills.
i think thay do a fac model but dont take my word for it.
thanks for the replys also i have seen some pellets called predators there the one's with the red point dont know the full name of them but if you now witch one's iam on about what do you think of them