K98 Mauser Sporterized 30-06, Optics dilemma or rifle?

[nedro]

I bought a Sporerized Mauser back in 2021. I just took it out a couple of months ago and started sighting in the scope (BEC Goldlable 3-9 x 50 w/ lighted recital). After about 6 shots of trying to tune it in, the rifle started hitting dirt, 20 yards in from of the 100 yard target. Then I remembered that it did exactly the same thing just after I bought it, but forgot about that incident. I'm thinking that the scope must be the culprit. The weird thing is that if it is the scope, why did it revert back to almost where I started the first time? Shouldn't have it been stuck aiming low?
All my other scopes are 30mm.The BEC has a 1" tube and I don't have another to try out.


So 2 questions:
Is a BEC scope worth sending in for repair?
Could it be anything else that would change the trajectory so drastically and then spring back, only to go out again?

Thanks.

[nedro]

Well, after looking everywhere, it looks like BEC scopes are not worth fixing.
The BEC looks like the scope I got with my new Benjamin Vaporizer gas charged springer pellet gun. Has the exact amber lens covers that are on my BEC.
I ended up buying a Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane (SFP) for less than $250.00 tax and shipping. I was looking for 1" tubes because of the way the Mauser ejects cartridges.