I don't know if there are advantages you can measure till you know which 180 your comparing to a 200.. I tend to really like the 200's in the 300 magnums, they have the ability to run the 200's in the 2900's pretty easily and with the added BC they seem a little harder hitting further out. Now, saying that, my hunting partner is still shooting a few screw turned 180's his father acquired way back when and kills a few elk every Fall from his old 300 Win. Truly, either one is as good as another if they shoot well for you.
