You are doing one heckuva lot better than I can with open sights.
One might think that would be good enough for out to maybe 65 yards - but not so as I found out later those two shots (at nearly that distance) were just a fluke. Even holdinga guestimated sight picture at just 25 yards was a real strain.30 years ago I could have kept all of them inside 2" at 100 yards, even on a bad day using the thick front sight on a TC Hawken. The only muzzleloader match I ever fired in was off-hand standing at 50 yards, 3 shots with two in the X and one just barelyoff but stillin the10-ring. I aint braggin, I'm cryin'.

You can never go home again.
And no, eyeglasses will NOT correct my vision problems (that's just for anyone that thinks they are an optometrist).