Chris might agree with me on this...if you want an fac air rifle,the best 1 is the rapid mk2 as you get more shots at a higher power.
can't see the point in a 20 shot fac air rifle personally.
i have the sl fac in .22 purchased from chris in yarmouth, i run it at 25ftlbs and we got over 60 good usable shots at my club range last wednesday, point of impact only changed by 10mm from full to empty, over 70 shots where achieved by turning up the power towards the end to keep the point of impact the same, i like the power adjuster ratting in buidings just plinking etc. all with the one rifle, i would certainly reccomend you try to have a go you wont be dissapointed.
engineer
I love the 410 but teh 410E is a dog - a musket trying to be as big boy when it isn't. Get a Rapid
slims post just proves a major point, i personally do not like the rapid unscrewing bottles to fill is my no. one complaint, they never seem to balance very well to me and as for the looks well, but all this is subjective so do try before you buy.
engineer
hi. i share a s410 extra fac with my father. imo bother with it. at full power (33 ft/lb ) it has a terrible shot count . also quite inaccurate past 50yds, whatever pellet is used. this sort of power deserves a regulator. try a super 10, or better still mk2 rapid. paul