Firearm & Gun Forum - FireArmsTalk.com > Long Guns > Auto & Semi-Auto Discussion > AR-15 Discussion > Headspacing on an AR

Reply
 
LinkBack Thread Tools Display Modes
Old 01-25-2011, 11:37 PM   #1
Feedback Score: 0 reviews
 
jhog's Avatar
 
Join Date: Jan 2011
Location: Converse,TX
Posts: 68
Default Headspacing on an AR

I have been looking at barrels and some companies give the option of getting a bolt headspaced to that barrel. So, if the bolt is housed in the carrier, how do you headspace the bolt to a "bare" barrel? This to me is confusing. I mean, how do you headspace an AR bolt?

__________________
jhog is offline  
 
Reply With Quote

Join FirearmsTalk.com Today - It's Free!

Are you a firearms enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Firearms Talk is owned and operated by fellow firearms enthusiasts. We strive to offer a non-commercial community to learn and share information.

Join FirearmsTalk.com Today! - Click Here


Old 01-25-2011, 11:59 PM   #2
Feedback Score: 0 reviews
 
Squirrel_Slayer's Avatar
 
Join Date: Aug 2010
Location: Rocklin,California
Posts: 1,135
Liked 1 Times on 1 Posts

Default

Been really curious about this myself.

__________________
Squirrel_Slayer is offline  
 
Reply With Quote
Old 01-26-2011, 12:30 AM   #3
Feedback Score: 0 reviews
 
jhog's Avatar
 
Join Date: Jan 2011
Location: Converse,TX
Posts: 68
Default

Quote:
Originally Posted by Squirrel_Slayer View Post
Been really curious about this myself.
And another cool Avatar! Were do you get those?
__________________
jhog is offline  
 
Reply With Quote
Old 01-26-2011, 12:57 AM   #4
Feedback Score: 0 reviews
 
Join Date: Mar 2008
Location: I see you, and you will not know when I will strike
Posts: 24,301
Liked 3474 Times on 1607 Posts
Likes Given: 3590

Default

Go/No Go gauge, but you need the right one for the application at hand.

.223 is different from 5.56 and both are different from Mil-Spec for the M16.

Sounds confusing but really the difference is like 1.465" to 1.470" or 1.473" - something very near those numbers.

What the manufacturers are doing is a CYA in case they are selling to a handloader and don't know it.

"what? Barrel blew up on you with your reloads? You didn't have it headspaced by us? Sorry, this one is on you".

__________________

Last edited by Dillinger; 01-26-2011 at 01:01 AM.
Dillinger is offline  
 
Reply With Quote
Old 01-26-2011, 01:26 AM   #5
Moderator
FTF_MODERATOR.png
Feedback Score: 0 reviews
 
JonM's Avatar
 
Join Date: Nov 2009
Location: Rochester WI,Rochester WI
Posts: 17,115
Liked 5262 Times on 2743 Posts
Likes Given: 331

Default

i dont worry about it mainly. just stick to the ammo the maker recomends. i reload for mine. all my chambers are 5.56 so i make my ammo to 5.56 spec. if you have a .223 chamber dont use mil-surp ammo only ammo marked for .223. if you put your own extensions on the barrel then you might need to buy some gauges for your application. i dont mess with putting on my own barrel extensions. i dont have the tools for it. used to in the army and the knowledge is faintly there in the back of my empty head rattling around somewhere. it prolly killed my ability to type some while back.

__________________

"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith

The problem with being stupid is you cannot simply decide to stop doing dumb things...

JonM is offline  
 
Reply With Quote
Old 01-26-2011, 03:32 AM   #6
Feedback Score: 0 reviews
 
jhog's Avatar
 
Join Date: Jan 2011
Location: Converse,TX
Posts: 68
Default

Quote:
Originally Posted by Dillinger View Post
Go/No Go gauge, but you need the right one for the application at hand.

.223 is different from 5.56 and both are different from Mil-Spec for the M16.

Sounds confusing but really the difference is like 1.465" to 1.470" or 1.473" - something very near those numbers.

What the manufacturers are doing is a CYA in case they are selling to a handloader and don't know it.

"what? Barrel blew up on you with your reloads? You didn't have it headspaced by us? Sorry, this one is on you".
OK so if I were to buy a berrel from, lets say, White Oak, it would be a good idea to also buy the bolt with it?
__________________
jhog is offline  
 
Reply With Quote
Old 01-26-2011, 02:41 PM   #7
Feedback Score: 0 reviews
 
mjkeat's Avatar
 
Join Date: Jul 2010
Location: Wichita,Kansas
Posts: 4,026
Liked 8 Times on 8 Posts

Default

Yes it would be a good idea. Im not 100% on why but have come to the conclusion through previous reading that it would give you the best outcome. When you purchase that BCG you'll have a spare bolt. Spare parts are always nice. THey eventually turn into complete rifles.

__________________
mjkeat is offline  
 
Reply With Quote
Old 01-26-2011, 03:00 PM   #8
Feedback Score: 0 reviews
 
Squirrel_Slayer's Avatar
 
Join Date: Aug 2010
Location: Rocklin,California
Posts: 1,135
Liked 1 Times on 1 Posts

Default

Quote:
Originally Posted by jhog View Post
And another cool Avatar! Were do you get those?
The interwebz my friend.

So if your chamber is marked 5.56, I should be A OK with my handloads if I only use the same kind of brass, Lake City, all the time? The LC stuff isn't marked with either .223 or 5.56, all it has on there is L C.
__________________
Squirrel_Slayer is offline  
 
Reply With Quote
Old 01-26-2011, 03:29 PM   #9
Feedback Score: 0 reviews
 
jhog's Avatar
 
Join Date: Jan 2011
Location: Converse,TX
Posts: 68
Default

Quote:
Originally Posted by Squirrel_Slayer View Post
The interwebz my friend.

So if your chamber is marked 5.56, I should be A OK with my handloads if I only use the same kind of brass, Lake City, all the time? The LC stuff isn't marked with either .223 or 5.56, all it has on there is L C.
I don't think that would matter so much cause once fired brass from your chaimber is formed to your chaimber however, I'm not to sure about fire forming .1223 in a 5.56 chaimber. Maybe someone else could enlighten us on that? Someone that reloads alot.
__________________
jhog is offline  
 
Reply With Quote
Old 01-26-2011, 03:49 PM   #10
Moderator
FTF_MODERATOR.png
Feedback Score: 0 reviews
 
JonM's Avatar
 
Join Date: Nov 2009
Location: Rochester WI,Rochester WI
Posts: 17,115
Liked 5262 Times on 2743 Posts
Likes Given: 331

Default

Quote:
Originally Posted by Squirrel_Slayer View Post
The interwebz my friend.

So if your chamber is marked 5.56, I should be A OK with my handloads if I only use the same kind of brass, Lake City, all the time? The LC stuff isn't marked with either .223 or 5.56, all it has on there is L C.
its not the brass its the dies and where you set the head spacing. case gauges are important for getting the proper headspacing for your dies. 223 brass will fire just fine in a 5.56. 5.56 will fire in a 223 but you may run into chambering issue and feed reliability which is why the manufactuerer doesnt recomend it. also repeatedly loading to 223 spec and firing out of 5.56 chambers will wear your brass out much faster due to the constant stretching and resizing.

thats why you should set your dies accordingly for each chamber and why i dont mess with .223 chambers just to preserve the life of my brass. it doesnt matter really which you have its just easier to stick with one or the other for extended brass life and ease of setup for reloading if you have multiple ar15's that shoot 223/556
__________________

"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith

The problem with being stupid is you cannot simply decide to stop doing dumb things...

JonM is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
Savage Model 110 Headspacing Stryker41 Gunsmithing Forum 9 02-15-2011 12:12 AM



Newest Threads