You have a real speedster for a 30 cal
I have never owned a 300 Win mag but I consider it a 30-06 on steriods. Just as with the 30-06 most use 150gr or 165gr for Deer. The beauty is that both 180gr and 200gr bullets can be pushed much faster than you can push them with the 30-06. If you reload for yourself you can basically reduce the performance to 30-06 levels. Some may ask why would you want less and I would answer that I don't like recoil if I don't have to have it.