I also agree you pay for what you get.

I put a Nikon Monarch Turkey Pro on my 11-87 with a 21" Cantelever barrel tube - slugs I use the rifled tube - turkeys I use a Hastings Extended extra full choke - 5 yrs ago. I have not adjusted this scope for accuracy ever since I dialed it in the first time 5 yrs ago. I shoot both slugs for deer and then change the choke to use Turkey loads.

It has been smack on each time I sight it in before either deer or turkey seasons and like you my eyesight had gotten so I could not focus on the back ramp to the front sight on open sights.

It was well worth the money.

JW