Preban headspace what to do

lhofeld · February 04, 2007, 14:24

Ok so I have a preban Argy and from time to time I switch out the standard lower with a Argy para lower. In the past I have always just switched the bolts and used the bolt serialized to the rifle in the para carrier. So today I decided to see if the para bolt would headspace in the receiver thinking there might not be too much difference in them. I put a NG gauge in and the bolt closed on it, just barely but it did. So I am thinking oh well just use the normal bolt with it, and then for no particular reason I headspaced the bolt that belongs in the rifle. It closes on a go gauge! Both of the bolts you can feel that it is ust barely too long. I have a field gauge and neither bolt comes close to closing on a field gauge. I have never had any problems out of the rifle and have never seen any indications of over pressure. So here is my questions. Is there something I am missing between HS for 308 and 7.62X51, Did the Argies just headspace long? I have never seen an Enfield that would not close on a NG gauge so is it the same thing? And should I headspace the gun again with a larger LS? I always HS my builds on the short side and that is the direction I am thinking. The other side is saying it a preban gun and not to Jack with it if it is running with problems.

Brian in MN · February 04, 2007, 15:50

I wouldn't worry about it as long as it does not close on the field. If it gets to bothering you just change locking shoulders. They are not that expensive.

1811GNR · February 04, 2007, 16:25

I have checked the headspace on two seperate Type III receivered Belgian FAL's. Both of them closed on the .308 no-go gauge, not on the field.

If you want to try to squeeze a little more accuracy out of it or reload your brass, tighten the headspace a little. if you want it to function like a MBR, let it be.

**W.E.G.** · February 04, 2007, 16:29

Leave it alone unless you plan to shoot handloads.

lhofeld · February 04, 2007, 16:41

Leave it alone unless you plan to shoot handloads.

Ok that is something I had planned to to do. So I should tighten it up if I want to shoot handloads through it?

Dave1 · February 04, 2007, 23:26

Is there something I am missing between HS for 308 and 7.62X51

I believe that HS for 308 is 1.630 - 1.634
HS for 7.62 nato is 1.632 - 1.636

There is a thread about this on the files somewhere.

Dave

February 04, 2007, 14:24	#1
lhofeld Registered FALaholic #: 12305 Join Date: Nov 2003 Location: The Great State of Oklahoma Posts: 771	Preban headspace what to do Ok so I have a preban Argy and from time to time I switch out the standard lower with a Argy para lower. In the past I have always just switched the bolts and used the bolt serialized to the rifle in the para carrier. So today I decided to see if the para bolt would headspace in the receiver thinking there might not be too much difference in them. I put a NG gauge in and the bolt closed on it, just barely but it did. So I am thinking oh well just use the normal bolt with it, and then for no particular reason I headspaced the bolt that belongs in the rifle. It closes on a go gauge! Both of the bolts you can feel that it is ust barely too long. I have a field gauge and neither bolt comes close to closing on a field gauge. I have never had any problems out of the rifle and have never seen any indications of over pressure. So here is my questions. Is there something I am missing between HS for 308 and 7.62X51, Did the Argies just headspace long? I have never seen an Enfield that would not close on a NG gauge so is it the same thing? And should I headspace the gun again with a larger LS? I always HS my builds on the short side and that is the direction I am thinking. The other side is saying it a preban gun and not to Jack with it if it is running with problems. __________________ "Laws that forbid the carrying of arms...disarm only those who are neither inclined nor determined to commit crimes...Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man." --Cesare Beccaria

February 04, 2007, 15:50	#2
Brian in MN Registered FALaholic #: 289 Join Date: Jul 2000 Posts: 4,927	I wouldn't worry about it as long as it does not close on the field. If it gets to bothering you just change locking shoulders. They are not that expensive. __________________ Kalashnikov: The most successful point and click interface in the world.

February 04, 2007, 16:25	#3
1811GNR Registered FALaholic #: 11900 Join Date: Sep 2003 Location: WA, USA Posts: 1,046	I have checked the headspace on two seperate Type III receivered Belgian FAL's. Both of them closed on the .308 no-go gauge, not on the field. If you want to try to squeeze a little more accuracy out of it or reload your brass, tighten the headspace a little. if you want it to function like a MBR, let it be. __________________ "I only wish I had a gun rather than a camera" - Sebastian D'Souza, the photographer who took the picture of the terrorist at the Chatrapathi Sivaji Terminal railway station, Mumbai, India, 26 November 2008

February 04, 2007, 16:29	#4
W.E.G. Administrator Silver Contributor FALaholic #: 1211 Join Date: Oct 2000 Location: Virginia Posts: 31,056	Leave it alone unless you plan to shoot handloads. __________________ . . . Ask me about the Mason-Dixon FAL Collectors Association.

February 04, 2007, 16:41	#5
lhofeld Registered FALaholic #: 12305 Join Date: Nov 2003 Location: The Great State of Oklahoma Posts: 771	Leave it alone unless you plan to shoot handloads. Ok that is something I had planned to to do. So I should tighten it up if I want to shoot handloads through it? __________________ "Laws that forbid the carrying of arms...disarm only those who are neither inclined nor determined to commit crimes...Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man." --Cesare Beccaria Last edited by lhofeld; February 04, 2007 at 17:19.

February 04, 2007, 23:26	#6
Dave1 Registered FALaholic #: 156 Join Date: Jul 2000 Location: First left past nowhere in MN Posts: 1,201	Is there something I am missing between HS for 308 and 7.62X51 I believe that HS for 308 is 1.630 - 1.634 HS for 7.62 nato is 1.632 - 1.636 There is a thread about this on the files somewhere. Dave __________________ Barack Obama, the best gun salesman since Bill Clinton NRA Life Member, SAF Defender Club, Life Member

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