I picked up a box of Weatherby 6.5 RPM 140gr AB ammo, and yes its just an extended 6.5-284, I pulled the bullet and got 64.6grs of powder, looks like/similar R23 but not positive.

I got 80.1grs of H2o, the loaded length was 3.333", here's a cpl pictures for comparison,

6.5-284 / 6.5 RPM / 280AI

[Linked Image from i1087.photobucket.com]


[Linked Image from i1087.photobucket.com]

6.5-284 / 6.5 RPM / 280AI / empty 6.5 RPM
[Linked Image from i1087.photobucket.com]


Because.......I just love rifles