Grouping is the foundation of all shooting until you can group your shots in all positions you are unlikely to acheive any results in competition. You must understand the following.

THEORY OF A GROUP

The group size will increase or decrease in proportion to the range it was fired at. For example if you can achieve a 100 mm 4 inch group at 100 yds then expect to get a 200 mm 8 inch group at 200 yds and 300 mm 12 inch at 300 yds.

Grouping is the foundation of all shooting, until you can master forming a tight group in all positions you are flogging a dead horse.

The Standard Army Fig 11 & 12 Targets are 450 mm wide you do not need to be a rocket scientist to work out that to ensure you have all shots on the target at 300 yds you must be able to achieve a 150 mm 6 inch group or less at 100 yds.

DEFINITION OF A GROUP.

A series of shots not less than three, fired from the same weapon, in the same wind weather and light conditions. These shots will seldom if ever go through the same hole, they will however form a distinct pattern. This pattern is known as a GROUP.

THE SIZE OF THE GROUP

Three things determine the size of a group:

a. The Weapon
b. The Ammunition
c. The Firer

In most cases the weapon can be discounted as the cause of a bad group likewise the ammunition. This just leaves the human element.