I have just switched to using a Remington 870 as a hunting rifle for buffalo, using slug bullets and am looking for the best way to mount a scope. Previously, I only used bead sights for birdshot bullets, which were quite comfortable for close targets. Now that I am shooting slugs at long range (about 50–75m), I want a solution that helps me aim faster and more accurately. I wonder what type of scope you guys are using? My budget is limited, so I prioritize something that is easy to install, durable, not too expensive but still effective.
Any sincere advice is welcome, thank you very much everyone!