I have a weatherby 300 mag and 0 - 375 no drop and at500 8.5 inches low.
Either you need glasses,or you need to quit drinking before posting.
Even with a 300 yard zero,you are over 20" low at 500 yards with any Weatherby load.
From the Weatherby site
http://www.weatherby.com/product/ammunition/ballistic?ammo1=.300+Wby.&ammo2=.257+Wby.& compare=Compare&compare=Compare
.