Being over 60 and wearing glasses since a teenager, I have killed big game with both iron sighted and scoped revolvers but now prefer a red dot sight on my custom .475 Linebaugh and FA 83 .454 Casull. I have killed several muley bucks with red dot sighted revolvers; and out of four bull elk with the revolvers, two were with red dot sights. I like the J Point and Leupold Delta Point.