Please post a picture of your set up. thanks Ray

Minnesota won't let me use a scope for ML season, so I bought that set-up. For open sights it is by far the best I've used. Very easy to see and the front hood lets you adjust how bright the front sight is. There's been a couple times shooting in the open during mid day and it was almost too bright without closing it down some. On my Knight KRB7 I mounted it in the rear scope mount holes. I could only fasten it down with one screw but as long as that screw is tight it works well.
In my opinion if you can use a scope it's your best option.

Yes.

See if you can find it. :D

Ah man you will love the truglo ghost ring/globe sight set up. I have it on my Optima right now.

I read you mounting it in the original rear sight holes. Why not in the rear scope holes? A peep works better close to your eye.

the ghost ring isnt a peep sight. Its very large.

Using the open sight hole allows me to perfectly line up the front and rear O's and kind of like a scope, if you see any black or haze around it, you're not centered. Its worked well for me over the years.

I understand FG, but generally a ghost ring will mount very close to the eye. It should be fuzzy. That's why it's called a ghost ring. :p

Anyway, as long as it works for you.

Every steel ghost ring i have seen mounted on any rifle is mounted just like a peep.http://www.xssights.com/store/rifle.html a ghost ring is a peep with a bigger apature! Ray

Sorry it took so long. I've been thinking more about golf than muzzleloading lately.

They are great sights but will take some getting used to.