I have several Cooper rifles and just recently waited 8 months for this one chambered in 6.5x284. This rifle shoots very well and can shoot in the .1's when I can.

I just weighed this one and with the Mark 4 it comes in at 10lbs 2oz. While the M22's are single shots, Cooper now has a M52 which is a repeater but it's only available in 06 based cartidges at this time. If you are wanting a hunting rifle to tote I would go with the HS or Ultralight Arms.
As stated the 6.5x284 is in the 270 class cartridges but with the high BC and high SD's of the .264 bullet, it makes a great long ranger.