I am about to buy a 300wsm and have a tight scope budget I have seen an old nikon buckmaster 4-12 x50 for 189 drawback is no side adjustment. I was also considering a vortex diamondback, new buckmaster, bushell elite 3200, or vxI in 4-12 x40. I know these are all below the standards most of you have for optics, but it may be the best I can do. I hunt over ean fields but my shots probably will never be over 500 yds. any advice???