I agree with Timber. I would bet it's the scope. I would check everything and make sure all is tight first. I went through 3 Simmons scopes the last few years and had problems with them all. Pieces loose on the scope itself and internal pieces. I finally bought a Luepold and WOW what a difference. Not only no problems but can see through much longer. I used to be able to see better with eyes in very low light situtations than through Simmons now the Luepold just lights everything up.