The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > Handloading, Reloading, and Bullet Casting

Reply
 
Thread Tools
Old December 27, 2012, 02:07 AM   #1
Bake
Senior Member
 
Join Date: November 11, 2012
Posts: 242
How do you tighten a 12 Ga. pattern?

Is anyone familiar with how shotgun shells were reloaded before shotguns had adjustable or interchangeable chokes? I have a BT 99 with a fixed choke (I.Mod.) and would like to tighten it up some. The I.M. choke is good at 16yds.,but not so good at the 21 yd line.
Bake is offline  
Old December 27, 2012, 10:36 AM   #2
kraigwy
Senior Member
 
Join Date: June 16, 2008
Location: Wyoming
Posts: 9,504
Work with different wads and pressure seating the wads.

Primers also make a difference.

With shotguns I've found it easy to match the loads to your existing barrel.
__________________
Kraig Stuart
CPT USAR Ret
USAMU Sniper School Oct '78
Distinguished Rifle Badge 1071
kraigwy is offline  
Old December 27, 2012, 10:43 AM   #3
Okcafe86
Senior Member
 
Join Date: October 15, 2012
Posts: 102
I'd just buy a different barrel...perhaps a threaded one. Can you actually do that on this model?
__________________
PRIDE RUNS DEEP
US NAVY SILENT SERVICE
MM2/SS
A-GANG/LOWER LEVEL MAFIA

Last edited by Okcafe86; December 27, 2012 at 10:50 AM.
Okcafe86 is offline  
Old December 27, 2012, 11:27 AM   #4
243winxb
Senior Member
 
Join Date: July 26, 2011
Posts: 1,051
Use #8 Magnum shot. Harder shot deforms less. The rounder pellet gives tighter patterns. Use the maximum weight/amount of shot allowed 1 1/8 oz. Magnum shot will weigh less than standard shot, the shot bushing can be adjusted to drop a full 1 1/8 oz, resulting in a higher pellet count. If your load is 1200 fps, the pattern will get tighter with less velocity like 1145fps. A slower burn rate powder that gives the same velocity may deform pellets less. For 27yds, you will need 1200 fps to keep the same lead used at 16yds. Larger 7 1/2 shot will deform less then #8, but will leave holes in the pattern. If all else fails, plastic buffer may be place in with the shot. http://carneyro.dot5hosting.com/page9.html

Last edited by 243winxb; December 27, 2012 at 11:39 AM.
243winxb is offline  
Old December 27, 2012, 02:36 PM   #5
BigD_in_FL
Junior member
 
Join Date: December 20, 2012
Location: The "Gunshine State"
Posts: 1,981
The IM SHOULD be fine at 21; that being said, you might want to consider having the barrel threaded for choke tubes, assuming you have already been to the pattern board for exact results.........
BigD_in_FL 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 06:14 AM.


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 0.06675 seconds with 9 queries