I own 3 of them 1 3-10X50, 1- 4-16x56 and finally a 6-25X56SF. They are great glass for the money and tough as nails. My 3-10 is on my Remington 700 SPS 300WSM and is holding up well. The 4-16 is on my heavy barrel 243 and my 6-25 is on my Ruger 22-250 and is clear as a bell. I would agree for a big rifle my next is a CZ Safari in 375H&H I'll use a Nikon Monarch on it. Other than the heavy hitters 338 and up my Millets will do just fine. Jess