The Firing Line Forums

Go Back   The Firing Line Forums > The Hide > The Dave McCracken Memorial Shotgun Forum

Reply
 
Thread Tools
Old March 9, 2008, 12:36 PM   #1
wildwood477
Member
 
Join Date: December 6, 2007
Location: 50 miles NE of Watertown, NY
Posts: 49
open cylinder

I bought an 18" barrel for my 870, and it says in the ad (open cylinder, I am assuming that whatever shot i use will be wide spread right at the muzzle, am I right or wrong?
wildwood477 is offline  
Old March 9, 2008, 01:16 PM   #2
10-96
Senior Member
 
Join Date: October 19, 2005
Location: Tx Panhandle Territory
Posts: 3,129
It won't be opened up any more than the wad and the diameter of the hole in the loud end. All shot paterns open up once they leve the bbl- some, as with extended ex-full chokes open up much much less than yours will in the same distance.

I think the only way to truely determine how your pattern behaves is to put it to the paper- 4x4 cardboards, box of shells, thermos of coffee, quality range time, friends, burnt powder... What could make life better?
__________________
Rednecks... Keeping the woods critter-free since March 2, 1836. (TX Independence Day)

I'm going to use the words "clip" and "Long Colt" every chance I get. It grinds my gears to see new members attacked when we all know dang good and well what's being refered to.
10-96 is offline  
Old March 9, 2008, 01:23 PM   #3
wjkuleck
Senior Member
 
Join Date: March 13, 2007
Location: Ohio, USA
Posts: 1,220
10-96 is correct on all points.

"Open Cylinder" simply indicates that there is no bore restriction, i.e., "choke," at the muzzle. While there are no clear-cut standards for choke designations, e.g., how much restriction is an "Improved Cylinder" choke, Open Cylinder is exactly what it says, regardless of gauge or manufacturer: no choke at all.

Regards,

Walt
__________________
Author, NEW! The M1911 Complete Owner's Guide
The M14
and M1 Garand Complete Assembly Guides
The M1 Garand Complete Assembly Guide
The AR-15 Complete Assembly
and (New 4th Edition) Owner's Guides
wjkuleck is offline  
Old March 9, 2008, 01:42 PM   #4
bcrash15
Senior Member
 
Join Date: April 7, 2007
Posts: 441
Like 10-96 said, as with any shotgun and choke, it's important to pattern it at the range you would expect to use it. Even with an open (cylinder bore) choke, the pattern might not be as large as you would think at closer ranges.
bcrash15 is offline  
Old March 9, 2008, 09:41 PM   #5
Dfariswheel
Senior Member
 
Join Date: May 4, 2001
Posts: 6,819
As a "rule of thumb" an open cylinder bore gun will shoot a pattern that opens up "about" one inch per yard from the muzzle.

in other words, at 9 feet/3 yards the pattern will be "about" 3 to 4 inches in diameter.
Dfariswheel is offline  
Old March 10, 2008, 05:46 PM   #6
Alert
Senior Member
 
Join Date: July 8, 2007
Location: Mobile, Alabama
Posts: 200
cylinder bore?

correct?
__________________
"One man with courage makes a majority" Andrew Jackson
Alert is offline  
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 06:32 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.07536 seconds with 7 queries