Understanding the test results
Velocity is measured at 2.5 metres from the muzzle.
pressure is the mean breech figure in Bar (as per CIP). sd is Standard Deviation (consistency). cd is the Central Density rating. This records the percentage of pellets landing in the 30-inch circle that were also within the inner 20-inch circle.
shot size is derived from actual pellet count per ounce and is listed to the nearest UK size, with < and > symbols used where the shot is slightly smaller than or larger than listed size. UK No. 7 = 340 pellets/ oz; UK No. 7.5 = 400 pellets/oz; UK No. 8 = 450/oz; UK No. 9 = 580/oz.
shot weight is the average actual shot load, measured in grains. 1 Grain = 0.065 Grams = 0.0023 Ounces.
cv is Crush Value. This is the amount by which the shot is reduced in size when subjected to the standard crush test. A smaller value means harder lead, so a CV of 20 per cent indicates harder shot than a CV of 30 per cent in pellets of similar size. Smaller shot crushes proportionately more than larger shot.