The Firing Line Forums

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

Thread Tools
Old November 16, 2009, 01:30 PM   #1
Junior Member
Join Date: November 16, 2009
Posts: 1
Swapping smoothbore & rifle barrels

I bought a cantilevered rifle barrel for my Mossberg 500 20 gauge shotgun. I mounted a scope on it and sighted it in. However, I still want to use the gun's original smooth bore barrel for small game hunting. Will swapping the barrels back and forth affect the accuracy of the scope? In other words, will I have to re-sight the rifle barrel every time I want to use ?
egward is offline  
Old November 16, 2009, 01:55 PM   #2
Senior Member
Join Date: February 16, 2006
Location: IOWA
Posts: 6,229
Okay, I am to understand that the scope will stay on the slug barrel, then you will change out your slug barrel for a shot barrel. Whenever you reinstall the slug barrel, you are questioning if you will have to resight it?? ... Right?
In a given season, I do just that and no, have not see any accuracy problems. However, at the beginning of every season, I put in some range time to confirm it's accuracy. Now, if you were talking about a reciever mount, then I'd have greater concerns. Hope this helps ....

Be Safe !!!
Pahoo is offline  
Old November 16, 2009, 02:05 PM   #3
Staff In Memoriam
Join Date: October 31, 2007
Location: Western Florida panhandle
Posts: 11,069
Yes the canti barrel is the one the scope stays on... I figure it should be close enuff for gubmint work (deer huntin' too) but always once before season as pahoo said, it needs qualified. Also, one round down the pipe when reinstalling it can't hurt and that way if you do miss than it won't be any question that you were the cause and not the barrel/scope combo at fault...
hogdogs is offline  
Old November 16, 2009, 05:10 PM   #4
Senior Member
Join Date: August 23, 2008
Location: SoCal
Posts: 6,436
Greetings egward, and welcome aboard,
In other words, will I have to re-sight the rifle barrel every time I want to use ?
As mentioned by Pahoo and hogdogs, a pre-season sighting-in is always wise for optical and open sights for all firearms. As far as frequent barrel swaps, you should be okay to maintain zero unless there's been an impact, or the mounting screws become loose.
zippy13 is offline  
Old November 16, 2009, 07:25 PM   #5
Senior Member
Join Date: December 17, 2007
Posts: 5,944
egward,can`t add anything additional to the great advice you`ve allready received. Just wanted to say "Welcome to TFL"!

Last edited by shortwave; November 17, 2009 at 07:26 PM.
shortwave is offline  
Old November 17, 2009, 06:01 PM   #6
Junior member
Join Date: March 27, 2009
Posts: 600
A different batch of ammo will affect the zero more than the changeing for the barrels on that type setup.
hardluk1 is offline  
Old November 20, 2009, 09:30 PM   #7
Senior Member
Join Date: February 6, 2007
Location: Eastern Pennsylvania
Posts: 102
I've got the same set-up and never had a zero problem yet. However I put two or three rounds down range before the season just to make sure because If I don't, that will be the season that monster buck of my dreams comes by and I miss because I was lazy or being cheap in trynig to save some ammo.
Welcome to the forum.
"The day I've learned everything about policework is the day I retire." - Sgt

Your goal in a gunfight should not be to simply should be to prevail.
OfficerJohnson10 is offline  

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 09:28 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2015 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent:
Contact Us
Page generated in 0.06020 seconds with 9 queries