And another thing---
Bores fowled with years of waxy pellet lube, dust and old spider webs will really screw with accuracy. Snug up a .22 patch in the middle of a good length of Dacron fishing line or similar, moisten the patch with isopropyl alcohol and pull it back and forth through the bore until she screams for mercy. Have a look-see if all is well. If stubborn bits remain, some JB Bore Paste done in similar fashion will right most wrongs. Finish with the alcohol rinse and let dry.
Never oil a springer bore! The physics are when a trigger is tripped, the piston comes forward and stops just shy of the cylinder's end. Akin to a diesel engine and the laws of physics, the air temp increases sharply and only then does the pellet start its forward journey, allowing the piston to travel the final mm or so to gently come to rest at the end of the cylinder. It's why carbon-based oils will flash/diesel in a springer with the resultant seal damage. Oiling the bore will allow the pellet to move prematurely and the piston seal to strike the piston end with some force, damaging the seal over time. Decreases MV too.
Also check the breach seal of a break barrel by placing a square of TP over the top of the breach and sending a pellet. If confetti is created, replace the breach seal and/or snug up the pivot screw to keep the muzzle from slightly tipping downward from the forces at play. A cocked break barrel should not move when the rifle is held vertically and the barrel lifted to the horizontal. If it does move downward, the pivot is too loose and the bore will droop at the shot too resulting in vertical stringing on a target. James' molly paste from ARH is a good lube for these joints.
Rebuilding and tuning springers is handily done for those that are so inclined. ARH has most parts and accuracy is greatly improved from those that are tired. Have done so to my FWB 124D and 300S to great effect. Both are used to compete against $pendy PCP's at bench rest and field target competitions. Such conversations are beyond the scope of this post....
