.297/250 Rook

.297/250 Rook
297-250 Rook cartridge 2D horizontal.png
Place of originUnited Kingdom
Production history
DesignerHolland & Holland
Parent case.297/230 Morris
Case typeRimmed, bottleneck
Bullet diameter.250 in (6.4 mm)
Neck diameter.267 in (6.8 mm)
Shoulder diameter.294 in (7.5 mm)
Base diameter.295 in (7.5 mm)
Rim diameter.343 in (8.7 mm)
Case length.83 in (21 mm)
Overall length1.1 in (28 mm)
Primer typeKynoch # 69
Ballistic performance
Bullet mass/type Velocity Energy
56 gr (4 g) 1,100 ft/s (340 m/s) 150 ft⋅lbf (200 J)
Source(s): Cartridges of the World,[1] & Modern sporting gunnery.[2]

The .297/250 Rook is an obsolete centerfire rifle cartridge developed by Holland & Holland.


The .297/250 Rook is a bottlenecked rimmed cartridge originally designed for use in rook rifles for hunting small game and target shooting.[1]

This cartridge was introduced by Holland & Holland some time before 1880 by blowing out the neck of the .297/230 Morris Long to .250 in (6.4 mm).[3] This cartridge is a contemporary of the .255 Jeffery Rook and upon their release the pair competed heavily with the very popular .300 Rook.[4]

As with other rook rifle cartridges, the .297/250 Rook was superseded by the .22 Long Rifle.[5]

Eley's .297/250 Rook rifle cartridge.


297-250 Rook cartridge dimensions 01.png

See also[]



  1. ^ a b Barnes.
  2. ^ Sharp.
  3. ^ Imperial War Museums, ".297/250 Rook".
  4. ^ Imperial War Museums, ".300 Rook".
  5. ^ Cartridgecollector.


External links[]