16ga.com ~ View topic

*Last edited by revdocdrew on Wed Nov 01, 2006 7:11 pm; edited 3 times in total*

Two helpful charts available (of course the Hallowell chart doesn't include 16g. Confused

)

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

and from Briley
http://briley.com/index.asp?PageAction=Custom&ID=12#9

Browning choke markings: * =Full.*- = Imp. Mod.,** = Mod.,**- = Imp.Cly., **$ = Skeet and *** = Cly.

Beretta and most italian guns:
F=full=1 star
IM=Improved Modified=2stars=3/4choke
M=Modified=3stars=1/2choke
IC=Improved Cylinder=4stars=1/4choke
CL=Cylinder=5stars=true cylinder(skeet?) or no choke at all,

Member Joined: 28 Oct 2005 Posts: 665 Location: Louisiana

Don't know how useful (or interesting) this information will be but thought I'd pass it along--can't remember just exactly where I copied this chart but I'll try to locate the reference. The complete chart includes 12's and 20's BUT this IS a 16ga. site so----------------

Browning Remington Winchester
BD-.665 BD-.673 BD-.664

Full Choke .628 (.037) .640 (.033) .633 (.031)

Modified .640 (.025) .656 (.017) .648 (.016)

Imp. Cyl. .649 (.016) .665 (.008) .657 (.007)

Member Joined: 08 Nov 2005 Posts: 3438 Location: Illinois

Chokes and charts----there are two never ending subjects--hows come the makers can't agree on a standard---a real standard among themselves Question

Colonial Arms has a nice chart (non-back bored barrels).
http://www.colonialarms.com/chokespecs.html

Member Joined: 26 Apr 2005 Posts: 743

Woodcock, your chart comes out of Jack O'Connor's "Shotgun Book". Sure shows some differences, especially between Browning and the other two. Especially on older Brownings, of all gauges, their chokes tended to be tighter than anyone else's.

Another site, scroll down for charts. Smile

http://www.shotguncombogauge.com/multiboregauge.html

Member Joined: 27 Jun 2005 Posts: 1545 Location: Michigan

High$Trap, Do you have one of those bore gauges?
If you do, how do you like it.

No sorry, I have never used one. I use a gauge very similar to the Boremaster in my everyday work so I think it would work very well.
I just think it's a little salty price wise for all the more a guy would use it.
I keep tryng to find a choke mic cheap on Ebay. Wink

Hope the charts are usefull though.

Member Joined: 02 Feb 2006 Posts: 602 Location: western pa

A telescoping gauge and an 0-1 mic are fairly inexpensive ( you can get them on Ebay) and accuratly measure bore diameters. Numbers and charts are always fun to study but the old pattern board is what really tells the tale.

Member Joined: 02 Jan 2006 Posts: 21 Location: Spencer IA

I have a Stan Baker bore gauage I bought at a gun show for 50.00 and it works great.Brownell has them in there catolog for around 400.00. It has information sheet that tell choke chamerber bore for all gauages. I was trying to post the info but could not figuer out how to do it

Member Joined: 31 Oct 2005 Posts: 446 Location: Wisconsin

I use a Galazan Pro Bore gauge along with Galazan chamber gauge set. I have seen so many shotguns with altered chokes and chambers that I would never consider purchasing a shotgun unless I had measured the restrictions and chambers. A little money spent considering the cost of a good shotgun. -Dick

*Last edited by revdocdrew on Sun Nov 26, 2006 1:52 pm; edited 1 time in total*

Here are the choke constrictions for the Invector Plus system

http://www.choketube.com/browning-plus.html

Cyl .740

Skeet .735

I.C. .730

Modified .720

Imp.Mod. .715

Full .710

X-Full .700

Turkey .680

Joined: 23 Jul 2006 Posts: 1 Location: massachusetts

Member Joined: 31 Aug 2005 Posts: 1257 Location: Nebraska

Agree with Dick. I've encountered several guns with altered barrels although in only one case did it alter my decision to purchase. Helps to know what the manufacturers decided were proper constrictions for their markings, and brings a little more meaning to the patterning work. Which, as Fred states, is required to know what's going on out there where the pellets hit.

kgb

Welcome aboard Mike. I'm certain your knowledge and expertise will be a most welcomed addition to the site. 16gg.