I use the Marble Bullseye sight on my 464 because of it's simplicity and it gets me on target in the woods quickly. It does however require a little more work to get proficient using it. Practice, Practice, Practice, !!!
With a tip from a friend I finally figured out how to use the Marble Bullseye Sight on my 464. I now cradle the 464's factory front sight bead in the bottom of the small peep on the Bullseye sight. This gives me more consistency in the groups and much better accuracy. In addition I now sight in at 25 yards. With open sights and my eyesight 25 yards enables me to get a much better sight picture. At 50 yards the front sight bead covers the black in a 5.5" target so shooting tight groups is difficult.
In the picture below I have the bead cradled in the small peep sight with none of the post visible. The bead just lays in the bottom of the peep sight. This helps me to sight in the same every time.
http://www.marblearms.com/bullseye-sight.html
Bill
With a tip from a friend I finally figured out how to use the Marble Bullseye Sight on my 464. I now cradle the 464's factory front sight bead in the bottom of the small peep on the Bullseye sight. This gives me more consistency in the groups and much better accuracy. In addition I now sight in at 25 yards. With open sights and my eyesight 25 yards enables me to get a much better sight picture. At 50 yards the front sight bead covers the black in a 5.5" target so shooting tight groups is difficult.
In the picture below I have the bead cradled in the small peep sight with none of the post visible. The bead just lays in the bottom of the peep sight. This helps me to sight in the same every time.
http://www.marblearms.com/bullseye-sight.html
Bill