Clay Shooting

Un­der­stand­ing the test re­sults

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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.

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