Going to buy a Vortex PST FFP scope in either 4-16x50 or 6-24x50 for my Sako Tecomate in 300WSM. Figuring this gun will be good to about the 7-800 yard mark. I have Leupolds on other rifles including a 4.5-14 and a couple of 6.5-20s on varmint rifles. Having trouble deciding which one would fit best. Gun will primarily be a hunting piece but I will be shooting gongs and jugs as far out as possible for fun and practice. Looking for help deciding on how big to go. Thanks in advance.