Not sporting to shoot grouse with a rifle! The .300 Rook rifle cartridge is a little straight wall round with a bullet of around 85 grains. It is sometimes called the .295 Rook. Very similar to the old .32 Colt pistol round which can be fired in the .300. It is a subsonic round and designed for shooting rooks; a sort of crow which was traditionally shot on the 12th. May for the young birds leaving the nest. Made into rook pie (the old nursery rhyme which mentions four and twenty black birds baked in a pie is refering to rook pie). A round was need that had good shocking power at short range but would not travel too far with being fired into the tree tops. Other rook rounds were the .255 Jeffery, .297/250, .380, .360 Number 5. All we similar to low power pistol rounds in ballistics. Combinations such as this must be very rare as I have never seen another. Lagopus.....
