The 6.5-284 Norma (6.5x55mmRB Norma) originated as a wildcat cartridge based on the .284 Winchester cartridge necked down to 6.5 mm.
History The parent case .284 Winchester was created around 1963, but did not see extensive commercial use. The 6.5 caliber allowed for the use of long, aerodynamic bullets. In 1999, Norma submitted it to CIP. It has since been standardized as the 6.5mm-284 Norma.
Use The 6.5-284 has been used extensively in benchrest competitions and is known as an extremely accurate long range round. Using an improved version of the 6.5-284, Rich DeSimone set a world record with a group.DeSimone's Dynamic Duo - 1000-Yard Record Rig (Reborn) and Classy New Curly Ash 6.5 Super Rich DeSimone's record has been broken by Tom Sarver, who shot a group in 2007 using a .300 Hulk wildcat cartridge that is based on the .338 Lapua Magnum cartridge.Sarver Shoots 1.403″ Group at 1000 Yards A bullet in this caliber is typically fired at to .
See also List of rebated rim cartridges List of rifle cartridges 6.5×55mm Swedish .260 Remington 6.5×47mm Lapua 6.5mm Creedmoor
References
External links Wildcatting the .284 Winchester Long-range shooters and wildcatters have kept the .284 alive. By M.L. McPherson Why the 6.5x284 for Long Range Shooting? by Robert Whitley, Precision Shooting Magazine, April 2007, Vol 54 The 6.5mm-284 Norma and 6.5mm Remington Magnum by Chuck Hawks Cartridge of the Month