Looking at puting one of these on one if not both of my CZ rifles for an upcoming safari. I love shooting irons and I plan to try to do some hunting with them on this trip. I will of course have a scope on hand as well but I really want to kill my buffalo with iron sights. Is there a big benefit to the beads over the Partridge sight. What's your general thoughts on these aperture sights. The express sights on my 375 are on but the 458 is a little off and I was thinking about trying these.