470 is a bit hot for anything really. I believe that the hottest gun you can have at most places is 450 FPS and that's if you're actually a sniper with a Minimum Engagement Distance.
I believe the downgrade you should be looking at is either an M100 or M110 spring (depending on other factors too).
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE