I'm using 500gn Westcastings (off the shelf with synthetic coating rated up to 1700fps).

I add a layer of liquid Alox to them to help reduce the leading. I'm using 38gns of AR2207 and CCI Magnum primers - not sure how fast they are going, but expect them to be below 1700fps. They do about 2 - 2 1/2 MOA

I'm going to use them in Group 1 of our BGR shoot this weekend.