i 2nd the Diavari. i shoot a 56mm on the 300 Jarrett and a Zeiss Conquest on the 7mag. the Conquest is a great scope for under 800 but i can tell a world of difference with the Diavari in low light situations. plus, as much of a punch that 300 jarrett puts out, the diavari with Talley rings has stayed on zero for prob 5 years and 35-40 rounds down the tube.