Skinny Barrel Dimensions ? - Shooting Sports Forum


Ruger Mini-14 and Mini-30 Ruger Mini-14 and Mini-30 family of rifles

Like Tree4Likes
  • 1 Post By RJF
  • 2 Post By James T. Kirk
  • 1 Post By kwg020
Reply
 
LinkBack Thread Tools Display Modes
Old 03-06-2020, 17:58   #1
Full Member
 
hylander's Avatar
 
Join Date: Feb 2004
Location: West
Posts: 489
Skinny Barrel OD Dimensions ?

So measuring a skinny barrel mini today.
In front of the sight: .561
Behind the sight: .561
At the step: .576
about 3" behind the step .576
Then in front of the gas block: .561 again

Is this normal Dimensions?
Going from the muzzle to the step at .561 then up to .576 and back down to .561 in front of the gas block?
I know the gas block is .561, however the barrel stepping up to .576 and then back down to .561 seems odd.

Can someone measure theirs to see if this is normal?
__________________
Failure is not an Option
hylander is offline   Reply With Quote
Old 03-06-2020, 21:25   #2
Full Member
 
Join Date: Nov 2003
Posts: 2,985
Yes, it's normal. Unique design.

kwg
kwg020 is offline   Reply With Quote
Old 03-06-2020, 21:27   #3
Full Member
 
hylander's Avatar
 
Join Date: Feb 2004
Location: West
Posts: 489
Originally Posted by kwg020 View Post
Yes, it's normal. Unique design.

kwg
Thanks,
Just seemed odd, like the barrel is bulged.
__________________
Failure is not an Option
hylander is offline   Reply With Quote
 
Old 03-07-2020, 13:24   #4
RJF
Full Member
 
RJF's Avatar
 
Join Date: May 2015
Location: Spotsylvania, VA
Posts: 5,624
It is! That bulge is for the GB front sight/bayo lug. There might be other reasons, but that seems to be the main factor.
James T. Kirk likes this.
RJF is offline   Reply With Quote
Old 03-08-2020, 10:40   #5
Full Member
 
James T. Kirk's Avatar
 
Join Date: Mar 2015
Location: The Neutral Zone... Mississippi
Posts: 907
Originally Posted by RJF View Post
It is! That bulge is for the GB front sight/bayo lug. There might be other reasons, but that seems to be the main factor.
RJ hit the nail on the head. I've always known it as the Mini 14 "hump." It keeps the bayo lug from being pushed down the barrel when using a bayonet properly
kwg020 and RJF like this.
__________________
You cannot negotiate with a tiger when your head is in its mouth (Chinese Proverb)
James T. Kirk is offline   Reply With Quote
Old 03-08-2020, 18:33   #6
Full Member
 
hylander's Avatar
 
Join Date: Feb 2004
Location: West
Posts: 489
Originally Posted by RJF View Post
It is! That bulge is for the GB front sight/bayo lug. There might be other reasons, but that seems to be the main factor.
The one I measured does not have a bayo lug though.
__________________
Failure is not an Option
hylander is offline   Reply With Quote
Old 03-08-2020, 18:52   #7
Full Member
 
Join Date: Nov 2003
Posts: 2,985
Originally Posted by hylander View Post
The one I measured does not have a bayo lug though.
The barrels were all turned to the same dimension, lug or not. My guess is they were done on a CNC machine and once the program is written there is no reason to change it for every barrel.

kwg
James T. Kirk likes this.
kwg020 is offline   Reply With Quote
Old 03-08-2020, 19:55   #8
Full Member
 
James T. Kirk's Avatar
 
Join Date: Mar 2015
Location: The Neutral Zone... Mississippi
Posts: 907
Originally Posted by hylander View Post
The one I measured does not have a bayo lug though.
Oh sorry, I guess I should have said with a bayo lug or not. Like KWG said they are all turned the same on a production line before Ruger went automated (pre-580) for the sake of cost. Then configured on separate lines for GB models, and others.
__________________
You cannot negotiate with a tiger when your head is in its mouth (Chinese Proverb)
James T. Kirk is offline   Reply With Quote
Old 03-08-2020, 22:48   #9
Full Member
 
hylander's Avatar
 
Join Date: Feb 2004
Location: West
Posts: 489
Thanks,
Makes sense.
__________________
Failure is not an Option
hylander is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 05:32.
Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
All information is copyright by Perfectunion.com unless already under copyright.