That's been my experience of my HW80 .22 reaper6.
No matter how long I leave it be, it comes out and shoots like the day it was brand new and first run in. I don't really need to bother with any other gun if it had to be just the one.
As well as my HW80, I have an HW77 .22 at sub 12 FPE. I'd say without any hesitation, these two are the best spring powered air rifles you can still buy.
All the best.
Simon
I currently own a HW35....HW55T.....2 HW77S....HW80....HW95....HW97.....and the is far the best