Posted: 12/7/2014 9:25:28 PM EDT
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What barrel pattern do I need to use to swap out the barrel on my Predatar 7.62? DPMS or Armalite?
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Yes. I've shot the piss out of it for a couple years and now I want to put a heavier profile barrel on. I wish I could just get another LaRue barrel but it doesn't seem to be an option. So I am left having to ask these compatibility questions? Got any insight? Have you contacted LaRue about having a new barrel installed? 
BigDozer66 |
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Quoted: Have you contacted LaRue about having a new barrel installed? BigDozer66 Quoted: Quoted: Yes. I've shot the piss out of it for a couple years and now I want to put a heavier profile barrel on. I wish I could just get another LaRue barrel but it doesn't seem to be an option. So I am left having to ask these compatibility questions? Got any insight? Have you contacted LaRue about having a new barrel installed? BigDozer66  |
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BigDozer66 -
I've had fairly regular correspondence with one of the employees ever since I discovered LT. This particular rifle is actually the first of a few that I have purchased from them. LT has been very good to me over the couple years that I've been dealing with them. I have brought the barrel issue up twice with them and both times correspondence goes black. It seems to be the only issue they don't want to talk about. I do not expect LT to give me a free barrel every time I need one. I would however really like to be able purchase a replacement of my choice or have the information available to know which barrel extension pattern is compatible with their bolt. |
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LUVONEGOD -
No, I am not using a dpms barrel. I will be using a Rainier Arms Ultramatch. I just need to make sure I get the correct barrel extension pattern. I always assumed it was dpms/SR25 but I recently read a thread that had some guy stating with authority that LT uses the Armalite pattern bolt and barrel extension. |
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http://forum.snipershide.info/showthread.php?t=242037 This might help. Please let us know how it works out. Thank you. The barrel nut is different on the PredatAR though, and also the nut isn't the issue as I will be utilizing the original one. I also avoid all of the different nut size problems by using my "precision" strap wrench. What I am trying to do is put in a new barrel without having to buy or replace any other parts. BCGs for the 7.62 are expensive and good ones are usually hard to come by. |
| Understood. Everything I have researched says DPMS barrel pattern/bolt/extension but you can find all the same information I am. Getting close to barrel replacement as well. If you could link the armalite thread or email it to me I would appreciate it. Would be great to have an LT response on this or perhaps they could start offering barrel replacement services / barrel sales soon. Perhaps we will hear from those that have done the barrel swap soon. Hope it works out for you. |
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BigDozer66 - I've had fairly regular correspondence with one of the employees ever since I discovered LT. This particular rifle is actually the first of a few that I have purchased from them. LT has been very good to me over the couple years that I've been dealing with them. I have brought the barrel issue up twice with them and both times correspondence goes black. It seems to be the only issue they don't want to talk about. I do not expect LT to give me a free barrel every time I need one. I would however really like to be able purchase a replacement of my choice or have the information available to know which barrel extension pattern is compatible with their bolt. Mark has said that he will warranty a barrel if you shoot it out. I'm sure someone here has the quote saved. |
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Mark has said that he will warranty a barrel if you shoot it out. I'm sure someone here has the quote saved. Quoted:
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BigDozer66 - I've had fairly regular correspondence with one of the employees ever since I discovered LT. This particular rifle is actually the first of a few that I have purchased from them. LT has been very good to me over the couple years that I've been dealing with them. I have brought the barrel issue up twice with them and both times correspondence goes black. It seems to be the only issue they don't want to talk about. I do not expect LT to give me a free barrel every time I need one. I would however really like to be able purchase a replacement of my choice or have the information available to know which barrel extension pattern is compatible with their bolt. Mark has said that he will warranty a barrel if you shoot it out. I'm sure someone here has the quote saved. I could have sworn that I have seen him say that also. BigDozer66 |
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I could have sworn that I have seen him say that also. BigDozer66 Quoted:
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BigDozer66 - I've had fairly regular correspondence with one of the employees ever since I discovered LT. This particular rifle is actually the first of a few that I have purchased from them. LT has been very good to me over the couple years that I've been dealing with them. I have brought the barrel issue up twice with them and both times correspondence goes black. It seems to be the only issue they don't want to talk about. I do not expect LT to give me a free barrel every time I need one. I would however really like to be able purchase a replacement of my choice or have the information available to know which barrel extension pattern is compatible with their bolt. Mark has said that he will warranty a barrel if you shoot it out. I'm sure someone here has the quote saved. I could have sworn that I have seen him say that also. BigDozer66 I believe that was actually stated on laruetactical.com back in 2012 when I bought my first OBR. I cannot seem to find it now though... |
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I believe that was actually stated on laruetactical.com back in 2012 when I bought my first OBR. I cannot seem to find it now though... Quoted:
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BigDozer66 - I've had fairly regular correspondence with one of the employees ever since I discovered LT. This particular rifle is actually the first of a few that I have purchased from them. LT has been very good to me over the couple years that I've been dealing with them. I have brought the barrel issue up twice with them and both times correspondence goes black. It seems to be the only issue they don't want to talk about. I do not expect LT to give me a free barrel every time I need one. I would however really like to be able purchase a replacement of my choice or have the information available to know which barrel extension pattern is compatible with their bolt. Mark has said that he will warranty a barrel if you shoot it out. I'm sure someone here has the quote saved. I could have sworn that I have seen him say that also. BigDozer66 I believe that was actually stated on laruetactical.com back in 2012 when I bought my first OBR. I cannot seem to find it now though... I've never read or heard Mark or anyone from LT make that statement. I have read many times other people make the claim that Mark has said it somewhere. True or not, I don't know? I specifically asked Freddy Blisch about barrel replacement options before I purchased it and he would not make any promises. He only said that we could discuss it when the day comes. Either way I'm not pushing the issue. I can't in good conscience make the claim that the barrel is totally shot out anyway. It is still a good barrel for certain employment. It's just not the pasty shooter I want it to be. |
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So out of curiosity what did you see change as your barrel degraded? What type of accuracy shift or reliability? Any idea on round count when this happened? The barrel has been fantastic and has served me very well. I've used it as a do everything rifle. From fast paced, high round count, close range shooting to very long range targets. Even though I know better, I didn't keep an accurate log book for my round count. I'm pretty sure I have no less than 8000 rounds but no more than 12000rnds down the barrel. I didn't have any issues until I started shooting suppressed exclusively which counts for the last 2000rnds that has been shot. I did run it hard, getting the barrel extremely hot many times. So hot I couldn't touch the forearm. The first thing I noticed was my groups began spreading slightly but the biggest thing was the poi started shifting around. Everyday I went out the poi would be different from the day before (No I wasn't taking the suppressor off). Naturally I thought it was the scope mount or the scope. It drove me crazy. I tried 4 different scopes over the course of a month before I was satisfied that it wasn't an optics issue. The inconsistencies continued so I got rid of the suppressor. It seemed to help but only some. All said I think the worst grouping and the poi shift was never more than 2moa. Perfectly fine I think for a blaster but this barrel consistently shot 3/4moa for the thousands of rounds before the change occurred. It has been several months since then and many variables have changed. I am going to try to get some new groups shot soon. |
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I specifically asked about barrel replacement, and got the yes from Mark.
http://www.ar15.com/archive/topic.html?b=2&f=219&t=219593 |
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I specifically asked about barrel replacement, and got the yes from Mark. http://www.ar15.com/archive/topic.html?b=2&f=219&t=219593 
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I specifically asked about barrel replacement, and got the yes from Mark. http://www.ar15.com/archive/topic.html?b=2&f=219&t=219593 Another reason why I spend my money with LT! 
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I specifically asked about barrel replacement, and got the yes from Mark. http://www.ar15.com/archive/topic.html?b=2&f=219&t=219593 Nice! I guess I need to start going directly to the source. |
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Understood. Everything I have researched says DPMS barrel pattern/bolt/extension but you can find all the same information I am. Getting close to barrel replacement as well. If you could link the armalite thread or email it to me I would appreciate it. Would be great to have an LT response on this or perhaps they could start offering barrel replacement services / barrel sales soon. Perhaps we will hear from those that have done the barrel swap soon. Hope it works out for you. Everything I have read has lead me to the dpms pattern conclusion too. I actually ordered the Rainier Arms Ultramatch in dpms pattern and then came acrossed the Armalite thread which lead me to where I'm at now. There is mention of the OSR being based off the Armalite in the Armalite faq thread. But that's not what got me. I can't find it right now but someone was specifically saying that LaRue rifle barrels and BCGs were based off of Armalite. If I come acrossed it again I will link it to you. The barrel I ordered has shipped so it's to late to change it unless I send it back. I have come to the conclusion that as long as the headspace checks out the differences between the two patterns will not matter for me. I should have the barrel by Thursday. I will report how it works out. |
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Everything I have read has lead me to the dpms pattern conclusion too. I actually ordered the Rainier Arms Ultramatch in dpms pattern and then came acrossed the Armalite thread which lead me to where I'm at now. There is mention of the OSR being based off the Armalite in the Armalite faq thread. But that's not what got me. I can't find it right now but someone was specifically saying that LaRue rifle barrels and BCGs were based off of Armalite. If I come acrossed it again I will link it to you. The barrel I ordered has shipped so it's to late to change it unless I send it back. I have come to the conclusion that as long as the headspace checks out the differences between the two patterns will not matter for me. I should have the barrel by Thursday. I will report how it works out. Quoted:
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Understood. Everything I have researched says DPMS barrel pattern/bolt/extension but you can find all the same information I am. Getting close to barrel replacement as well. If you could link the armalite thread or email it to me I would appreciate it. Would be great to have an LT response on this or perhaps they could start offering barrel replacement services / barrel sales soon. Perhaps we will hear from those that have done the barrel swap soon. Hope it works out for you. Everything I have read has lead me to the dpms pattern conclusion too. I actually ordered the Rainier Arms Ultramatch in dpms pattern and then came acrossed the Armalite thread which lead me to where I'm at now. There is mention of the OSR being based off the Armalite in the Armalite faq thread. But that's not what got me. I can't find it right now but someone was specifically saying that LaRue rifle barrels and BCGs were based off of Armalite. If I come acrossed it again I will link it to you. The barrel I ordered has shipped so it's to late to change it unless I send it back. I have come to the conclusion that as long as the headspace checks out the differences between the two patterns will not matter for me. I should have the barrel by Thursday. I will report how it works out. Thanks good luck with the barrel change process. I have 2 Rainier Ultramatch barrels one in 14.5" & one 12.5" albiet in Wylde chamber for .223/5.56 and both are excellent. I don't know if you have the time to video or photograph the steps but Im sure several of us would really appreciate it. Rainier has great customer service and a no questions asked barrel return policy. Im hoping you have no issues but if you do you should be ok by them. Obviously, you don't have another option at this point in time with a barrel from Larue. Hopefully Mark and the Larue teams hard work on barrels will be made available as a purchase option soon. |
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Thanks good luck with the barrel change process. I have 2 Rainier Ultramatch barrels one in 14.5" & one 12.5" albiet in Wylde chamber for .223/5.56 and both are excellent. I don't know if you have the time to video or photograph the steps but Im sure several of us would really appreciate it. Rainier has great customer service and a no questions asked barrel return policy. Im hoping you have no issues but if you do you should be ok by them. Obviously, you don't have another option at this point in time with a barrel from Larue. Hopefully Mark and the Larue teams hard work on barrels will be made available as a purchase option soon. Quoted:
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Understood. Everything I have researched says DPMS barrel pattern/bolt/extension but you can find all the same information I am. Getting close to barrel replacement as well. If you could link the armalite thread or email it to me I would appreciate it. Would be great to have an LT response on this or perhaps they could start offering barrel replacement services / barrel sales soon. Perhaps we will hear from those that have done the barrel swap soon. Hope it works out for you. Everything I have read has lead me to the dpms pattern conclusion too. I actually ordered the Rainier Arms Ultramatch in dpms pattern and then came acrossed the Armalite thread which lead me to where I'm at now. There is mention of the OSR being based off the Armalite in the Armalite faq thread. But that's not what got me. I can't find it right now but someone was specifically saying that LaRue rifle barrels and BCGs were based off of Armalite. If I come acrossed it again I will link it to you. The barrel I ordered has shipped so it's to late to change it unless I send it back. I have come to the conclusion that as long as the headspace checks out the differences between the two patterns will not matter for me. I should have the barrel by Thursday. I will report how it works out. Thanks good luck with the barrel change process. I have 2 Rainier Ultramatch barrels one in 14.5" & one 12.5" albiet in Wylde chamber for .223/5.56 and both are excellent. I don't know if you have the time to video or photograph the steps but Im sure several of us would really appreciate it. Rainier has great customer service and a no questions asked barrel return policy. Im hoping you have no issues but if you do you should be ok by them. Obviously, you don't have another option at this point in time with a barrel from Larue. Hopefully Mark and the Larue teams hard work on barrels will be made available as a purchase option soon. I might have found what your looking for on the 308ar.com forum google Armalite .308 vs DPMS. 308 and you should be able to find it http://forum.308ar.com/topic/1741-larue-lower-with-armalite-upper/ Sent you message. It would be nice to get a definitive answer. |
| I was able to get out to the range the last couple of days to get some new test groups. This was in no way extensive testing and with a very small (for me) round count (80rnds per day). I can report that I had ZERO shift in the poi. Whatever was causing it before will probably forever remain a mystery? Unfortunately I could only get out to 50yds so I can't report on moa@100. I can say that the best i could get was 1.25" groups @ 50yds. I know what that might sound like but it's not what I'm accustomed to from this setup and not tight enough for what I need right now. It's still a good barrel and I will definitely still use it for the times when I want to throw a red dot on the gun. |
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Noooo! I finally received the RA Ultramatch barrel (dpms pattern), headspace does NOT check out. Using the clymer gauges, go/1.630, no go/1.634, go is a go, no go is also a go. I conducted the check on the Predatar barrel using the same method and the gauges check out as they should, go is a go, no go is a no go.
So frustrating!! |
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Noooo! I finally received the RA Ultramatch barrel (dpms pattern), headspace does NOT check out. Using the clymer gauges, go/1.630, no go/1.634, go is a go, no go is also a go. I conducted the check on the Predatar barrel using the same method and the gauges check out as they should, go is a go, no go is a no go. So frustrating!! Does anybody have any experience using the scotch tape method on the no go gauge? Supposedly scotch tape is .003" thick. Applied to the clymer no go gage it adds up to 1.637. This is within clymers field specs (1.638), and well within the NATO measurements for 7.62 (1.635-go, 1.6405-no go). Using this method, the no go gauge with tape applied gave me a proper no go. I should be good to go right? |