Gunsmithing accurizing a remington

[para1505]

When a smith does a accuracy package on a R700 as some advertize. How do they true the barrel threads in the reciever and use the factory barrel. To do that I thought you had to recutt the barrel threads in the reciever to a bigger diameter and the threads on the barrel would be to small to fit the reciever, or do they have to skip that part of truing the reciever?

 

[my human host]

Re: accurizing a remington

One option is to do a "set back" on the barrel. This means the threaded portion of the barrel is cut off and a new tenon and chamber are cut. There isn't always enough barrel to accomplish this.

Really, the only way to know what an individual smith will do is to ask them. There are a lot of different definitions of accurizing.

 

[dang472]

Re: accurizing a remington

I was going to do the same work to my new SPS Varmint 308. I had the action over to Nathan Dagley at SSG. He said he could do it, but it wasn't the greatest. Some remington barrels have their chambers a little offset. As in, not centered. Nathan looked at my barrel and said it didn't look too bad, but in the end, I spent the extra $500 for a new barrel. Now I have a new take off that I could sell for $100.

 

[JFComfort]

Re: accurizing a remington

Check out STR's video's in at the top of the forum. They will show you exactly what is done and how its done.

 

[x ring accuracy]

Re: accurizing a remington

Once a receiver is trued, threads included, if reusing the factory barrel (why?) it must be set back, no getting around it. This is provided there is enough of the breech end left to set back.

 

[BOLTRIPPER]

Re: accurizing a remington

some gunplumbers use magic dust.....

 

[Pflyinguy]

Re: accurizing a remington

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JFComfort</div><div class="ubbcode-body">Check out STR's video's in at the top of the forum. They will show you exactly what is done and how its done. </div></div>

Great videos, takes a while to get through them but there is a ton of info

 

[Keith Johns]

Re: accurizing a remington

When people ask us to true their 700 and put the factory barrel back on, we say we can true everything but the receiver threads.
The threads get cleaned up because they are nasty when you first get that factory barrel off. But no metal is removed.

We then do a set back of either .0625", or .1250". More if needed, but that's usually enough with the thicker lug.

Add a new lug and there ya go.



Like others said, we suggest waiting until you get a new barrel, and having the threads trued as well.

 

[Mgordon]

Re: accurizing a remington

Before even considering using a factory barrel you want to inspect the chamber/throat for extreme run out issues and you want to slug the barrel to feel how consistent the bore diameter is.

Having a consistent bore diameter is more important to accuracy than having a concentric chamber, so some barrels will either need to be lapped or just replaced.

We have set back barrels that were unable to remove the chamber/throat run out, but the barrel was extremely smooth from chamber to crown and it shot as good as a custom barrel.


If you want to remove the run out, you need to cut off about .700" of the existing barrel (heavy contours only) then bore out the chamber so its concentric. Dont bother using a PTG rod to indicate the chamber in because it will give you a false reading of the bore. Then your reamer will start in the chamber straight, and cut concentric.

Honestly, its so much work just to use a factory barrel again, just put on a good quality barrel and be done with it.

Mark

 

[LoneWolfUSMC]

Re: accurizing a remington

I would not have a 700 trued with the factory barrel. Spend the extra for a quality tube.

 

[Clark]

Re: accurizing a remington

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LoneWolfUSMC</div><div class="ubbcode-body">I would not have a 700 trued with the factory barrel. Spend the extra for a quality tube. </div></div>
+1





Han Solo: She'll make point five past lightspeed. She may not look like much, but she's got it where it counts, kid. I've made a lot of special modifications myself.

 

[Hookturnr]

Re: accurizing a remington

These days I wouldn't have one trued with a factory barrel but I can't say I haven't done it.
My first rifle had a shot out 30.06 tube on it(45yrs old n wouldn't hold 2 MOA anymore) and being a young, poor fella I couldn't afford a new rifle. A local smith hooked me up with a brand shiny new take off Remmy barrel for something like $40 and trued up my action and installed said barrel for me for a grand total of $250 if I remember correctly. It made for a 3/4MOA gun that I hunted with for the next 10 yrs!
That being said, I did what I did because my barrel was shot out and all I could afford was a take off factory tube. If you've got a good factory tube on there I would just bed the rifle in a good stock and go with it until it's time for a new tube or until its time for you to quench that burning desire for a premium tube.

 

[mdesign]

Re: accurizing a remington

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LoneWolfUSMC</div><div class="ubbcode-body">I would not have a 700 trued with the factory barrel. Spend the extra for a quality tube. </div></div>

^^...what he said. By the time you get done doing all the work to "save" the factory tube, you could have finished up a quality one.

 

[STR]

Re: accurizing a remington

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BOLTRIPPER</div><div class="ubbcode-body">some gunplumbers use magic dust..... </div></div>


That's some funny shit. Always count on you for that.

 

[x ring accuracy]

Re: accurizing a remington

You have a bag full Ozzie : )

 

[707electrician]

Re: accurizing a remington

Don't waste your money trying to "accurize" a factory barrel

 

[para1505]

Re: accurizing a remington

I understand that most everyone's opinion is to just wait and get a custom barrel. But the matches are starting soon. First one tommorrow. I have a barrel wich has to much free bore now. The smith that is doing the work is local to me and does great work. So against most of the advice thats has ben given to me about this, I am getting the Remington Barrel from Mike @ Tac-OPS for $110.00 and then Bobby is trueing and lapping barrel for $250.00. I will give a good range report on how things turn out. I will be putting it in a B&C A3 stock that I like very much. With a SS10x42HD that I also like very much. I am mail the order off to Mike @ Tac-Ops Monday. So hopefully I will have a range report in 2 weeks.

 

[para1505]

Re: accurizing a remington

Anyone that was wanting to know the out come of this tiopic. I have got my rifle back from the smith. Reciever trued, bolt trued and lapped, B&C A3 stock skim bedded, 26" Remington take off barrel .308 installed. I will take the 1st shots with it tonight. I will post range pics tomorrow.

 

[Beef82]

Re: accurizing a remington

Did you have the chamber recut and barrel set-back? What'd the finished length on the barrel end up? Look forward to seeing your results.

 

[para1505]

Re: accurizing a remington

Beef he set the chamber at zero on the no go guage, he did not do the set back it still has the remington long free bore. I don't have any pics yet but it took about 4 rounds for it to start coming together. It shot just 1MOA at 100 yards. but I have only shot 20 rounds through it. It looks like I need some load development. right now I am loading
brass:FGMM
powder:RL15 43 gr
primer:CCI BR2
bullet:SMK 175 HPBT
I will shoot about 30 more rounds tomorrow. Then clean some copper out of it. Then load some rounds up too 45gr from 43gr at 1/2 gr encraments to see what it likes better. I will post shot groups tomorrow.

 

[para1505]

Re: accurizing a remington

Well today I started early shooting. The rifle was shotting just at 1MOA. It keep having a few fliers then it finally opened really up at 50 rounds. I could see a lot or copper on the lands so I cleaned enough to get the copper out of the barrel. Then I shot another 20 rounds. It was a little tighter than before but i knew it just had to do better. So I left the porch....OH yea I can do all this off of my porch. Went down to the basement and started loading some more rounds up. I went back up to the porch and chambered a round that I bumped up a little to 43.5 gr of powder. Shot a 5 round group...it was a lttle tighter about 3/4" group. So then I loaded some mor up in the magazine but these were at 44 gr of powder.....Damn looked like a 1/2" group. So I ran back down to the basement loaded up 5 rounds with 44.5 gr of powder.....oh yea it is RL15....and 5 more with 44 gr. the 44.5 opened back up to almost 1" group. So I load the 44 gr rounds back in the rifle again...it shot a .4" group. So i am very pleased with the results. Oh yea the 43 gr chronoed at 2590. It was raining latter so I did not get to chrono the 44gr load.
So would I would of liked to of put a Bartlien, rock or Schnieder barrel on it....HELL yea, but I just could not affward at this time. But I ended up with a very could product with a remington barrel. So would I true up a reciever again and put a remington tack off barrel on it.... YES I would. The 20
' barrel a replaced shot this well also just a little slow on the velocity. So if you use a very competent smith you can get a really good shooting rifle using off the shelf products.

 

[para1505]

Re: accurizing a remington

sorry no pics, like I stated it started raining so I did not take any.