Actual Bore and Choke Measurements of Model 21

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Actual Bore and Choke Measurements of Model 21's

Click on the A BLUE SERIAL NUMBER for details and photos of each gun.

Serial #	Gauge	Grade		Bore	Constriction	Marked
4,870	20	Field	Right	0.614	0.006	Mod
			Left	0.615	0.022	Full

11,334	20	Skeet	Right	0.615	0.003	WS-1
			Left	0.615	0.008	WS-2

15,617	20	Skeet	Right	0.615	0.002	WS-1
			Left	0.614	0.011	WS-2

26,966	20 3-Inch	Field	Right	0.615	0.007	Mod
			Left	0.615	0.024	Full

6,858	16	Skeet	Right	0.675	0.005	WS-1
			Left	0.675	0.014	WS-2

6,515	16	Field	Right	0.612	0.008	IC
			Left	0.612	0.021	IM

21,377	16	Field	Right	0.669	0.011	Mod
			Left	0.669	0.029	Full

19,655	12	Skeet	Right	0.731	0.008	WS-1
			Left	0.732	0.015	WS-2

23,359	12	Skeet	Right	0.730	0.004	WS-1
			Left	0.730	0.016	WS-2

30,136	12 3-Inch	Duck	Right	0.7315*	0.004	IC
			Left	0.734	0.016	Mod
	12 3-Inch	Duck	Right	0.730	0.036	Full
			Left	0.730	0.036	Full

* Note 28" Barrels for #30,136 were orginially choked Mod/Full. The chokes were opened at Winchester's Custom Shop in 1966 to IC/Mod.

� 01/05/10 M.C.Manges