My go-to optic for all my long rifles chambered in 7.62x39, 5.45x39, 300 Black Out, and 5.56 is the Primary Arms SLX 3X Microprism optic.
It's a "no fuss for quick response", compact, lightweight optic featuring an etched reticle, and a removable base with options for 8 unique mounting heights .
While at the range, I noticed shots were hitting all over the target, as I was burning through a LOT of ammunition.
Here are the results and resolve.