if you plan to shooty only at 500 yards perhaps no need big power scope
night force is not my favorite scope ( built in japan !!! )
Swaro is the BEST european scope ever built but with big caliber power 16 x is enought so the 4x16 is nice balanced fot your rifle .
if you want to put money in a real great scope ( full US made ) try the US OPTIC SN 3
3.2x17 that the medium / long range scope
optic quality is outstanding and you have a very tought scope you can choice between first and secong plan focal for your reticule by this way you get a variable size reticule or a fixed size reticule ( as leupold ) I have several US OPTIC even if the price is hight ( around 2000$ ) quality is outstanding specialy if you compare to a Nightforce .