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12 Gauge

20 Gauge

American

English

Browning

Italian

Percentage

Constriction

Constriction

D esignation

D esignation

Codes

Codes

Pattern

.000" -.001"

.000" - .001"

cyl

true cylinder

***

C****

40%

.002" - .006"

.002" - .004"

skeet

impr cylinder

**$

S

45%

.007" -.013"

.005" - .011"

imp cyl

quarter

**-

****

55%

.014" -.023"

.012" - .019"

mod

half

**

***

60%

.024" -.031"

.020" - .026"

imp mod

three quarter

*-

**

65%

.032" -.040"

.027" - .033"

full

full

*

*

70%

.040"+

.034"+

ex. full

75%
 
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