Try another scope/rings combo.......but it could be the barrel
Some times with budget 2 peice mounts , swapping the front and back rings can get you better centered.
Looks to me your rifle is affected by barrel droop, if as you said you tried two scopes and it does the same thing, while grouping well. Crosman rifles are notorious for that. You just need to bend it upward slightly. Do a little search on the forum, lot of info on how to fix that problem.
Start over Charles..Remove the scope and rings. Recenter the reticle to the scope. If you do not know google, very simple. Remount your scope rings to gun and leave loose. Begin tightening screws sequentially keeping scope square and plumb throughout the process. I put my gun in a fixed position and monitor the plumb and square throughout using a straight edge and framing square. You can also check barrel droop with the framing square in case you need to shim. This will get you back in the ball park with plenty of adjustment to begin with. Good luck!!!!
I have three scoped air rifles that are sighted in @10 yards.Winchester/Daisy 4X32AO ($30) on 20 year old 880. 10 shots inside dime circle @10 yards with 3 shots touching inside perimeter.UTG 4X32AO ($50) on new this year 880. 10 shots inside dime circle @10 yards no shots touching inside perimeter ctc 9/16" group.Hawke Sports Optics Advantage 4X32AO ($100.) 10 shots inside dime circle @10 yards one ragged hole 5/16" ctc group.A dime is 11/16" diameter.The two Daisy 880's were a little trickier to mount because of the plastic recievers. But were easy zeroing in.The R7 took about 12 total clicks from 1st shot to zero.I am not a sharp shooter or scope mounting guru but for me these three were easy.
There are several reasons a gun can shoot low and scope and mounts are among them. Other things to consider are whether the gun is closing completely when latched or is there a mechanical reason for it not closing. A new breech seal can contribute to low shots but within a day it is normally compressed to where it should be.Use a square to see if the face of the breech is truly perpendicular to the barrel. If it is off even a small amount it can prevent complete closure. The metal block just above the spring loaded alive jam can extend down too far, contacting the latching rod before the barrel is completely closed.Of course if your piston seal is flawed it can cause variable speeds resulting in different points of impact, too.
Quote from: Roadworthy on October 23, 2017, 01:26:11 PMThere are several reasons a gun can shoot low and scope and mounts are among them. Other things to consider are whether the gun is closing completely when latched or is there a mechanical reason for it not closing. A new breech seal can contribute to low shots but within a day it is normally compressed to where it should be.Use a square to see if the face of the breech is truly perpendicular to the barrel. If it is off even a small amount it can prevent complete closure. The metal block just above the spring loaded alive jam can extend down too far, contacting the latching rod before the barrel is completely closed.Of course if your piston seal is flawed it can cause variable speeds resulting in different points of impact, too. Once i reversed the scope mounts i had no more problem with it shooting low, it just runs out of right adjustment and always shoots to the left. If i hold off right of my target 2.5" it will hit dead center. Cheap mounts and scope i am sure is to blame.