Good day to you Xausa

Thank you kindly for the reply, it is much appreciated. Xausa , yes I think this type of ghost ring set-up is an excellent substitute for an expensive scout mount system . My eyesight is still good enough to shoot out to 100 meters but I will only use the Mannlicher Schoenauer .458 on walk and stalk hunts for warthog and table fair game.
Xausa, I am currently busy working on a new front sight bead, a little wider /bigger that the current one...I will make use of warthog tusk ivory since it does not fade into yellow but keep the white ivory...I will make use of brass as well.

Thank you for the advise to thread the ghost ring stem..it will ensure finer adjustments to shoot more accurately ...I will incorporate it in a new fully adjustable ghost ring aperture sight as a future build...

Xausa, on this photo you will notice a grub screw...although not threaded I can do fine adjustments ..but a threaded post will definitely be the most appropriated system.

It was my intention to thread the aperture hole to thread in a smaller aperture for finer shooting work as you have suggested...

Regards

Gert