speer shows pushing a 220gr over 2800 with that powder and the hammer bullets usually run a little faster than cup and core then take into account a 28 inch barrel, sounds spot on to me and you cannot compare velocity with same weight bullets in different diametersI could see that being your pushing it with a magnum. Im rebarreling a pre 64 model 70 to 338-06. Even with a 26" barrel the book doesn't show anything remotely close to 2900 fps with a 220gr bullet.