tokens: The 6.5 Creedmoor chambering has the traditional 203 mm ( 1 in 8 inch ) or 31.2 calibres right-hand twist rate shares the relative ease of chambering it in arms designed for .308 Winchester sized cartridges , though the 6.5 Creedmoor ( 6.5×49mm ) maximal overall length is longer compared to the .308 Winchester .