Nice shooting/groups. I don't see a lot of posts here with regard to Air Arms rifles, but they sure seem to shoot very well. I received a .25cal S510 Ultimate Sporter yesterday and can't wait for spring to try it out to see if it is an accurate one also.
Very good accuracy! I just received a new S510 yesterday and have yet to shoot it. Hopefully will be able to get it on the range in the next few days. That 410 seems to be doin the trick for you!
Nice shooting. What velocity are your shooting those at? CPHPs work well at slower speeds but groups tend to open up past 30 yards, at least in my guns.