UK Cokes to US Chokes?

[limey1]

Anybody got a chart as to how the two chokes compare?
eg in the U.K. it is 1/4,1/2, 3/4, and full. How does that compare to her????
Thanks for the help......

 

[Lodi]

Here are the dimensions, I don't know of a side-by-side chart, though I'm sure there is.

Colonial Arms

UK Chokes -- Constriction from bore diameter.
~ IC = .005"
~ 1/4 = .010"
~ 1/2 = .020"
~ 3/4 = .030"
~ Full = .040"

 

[gunsaholic]

Best way to know for sure is have your muzzles measured to get an exact reading . Chokes could have been reamed . Depending on the year, the bore measurement should be marked, for example 18.3. You have to figure out your choke from what the bore measurement is compared to the measurement at the muzzle. Really you should have the bores measured as well because the bores could have been honed out at some point unless this is a newer gun.

 

[Claybuster]

http://www.hallowellco.com/choke_chart.htm

 

[Brucecounty]

i believe 1/4 is improved cylinder 1/2 is mod and i believe 3/4 is improved mod browning marks there chokes like this as well still

 

[limey1]

thanks claybuster just what I was looking for........

 

[guntech]

That chart leaves out one choke - Skeet II

Cylinder Bore, Skeet I, Improved Cylinder, Skeet II, Modified, Improved Modified, Full, Extra Full

 

[Claybuster]

That chart leaves out one choke - Skeet II

Cylinder Bore, Skeet I, Improved Cylinder, Skeet II, Modified, Improved Modified, Full, Extra Full

Skeet II = Light Modified = 3/8 Choke