5R rifling accuracy?

5r is no more accurate then conventional 4. for what its worth, when i was reading late last year almost all records are held by 4grove barrels.

if any thing, having owned a 5r, i would guess that when they (rem) produced them in lower numbers, the QC was a bit higher then trying to pump out hundreds of thousands of rifles per year.
 
I have a 5R Benchmark HB on a blueprinted 700 Action, and it is plenty accurate. [.24 - .3 moa out to 400, as far as I have shot it.]

However, they are not necessarily any more accurate than a good conventionally rifled barrel.

Sure are nice to clean up though!

Regards, Dave
 
I understand the benefit is useable bore life is improved over conventional 4 groove rifling. Supposedly peak accuracy is maintained longer but I have nothing to quantify that.
 
I have a 5R benchmark I just chambered in 300wm for hunting

the rifle is not more accurate than my 700P, around 3/8 - 1/2 moa

but clean lot easyer than any other rifle I ever owned

on my next build, I will use a 3C for a 338 LM it should be home soon
 
Buster95 said:
According to Krieger barrels their 5R barrels are not more accurate than their conventional barrel, why so many shooters claim that their Remington 700 5R Mil Spec are so accurate? Maybe the Remington 5R barrels are better made than the conventional ones.

http://www.kriegerbarrels.com/5_R_Rifling-c1246-wp6676.htm last paragraph
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I have only heard this second hand that the Factory Rem 5R barrels come from the Military contracts... whether same barrels or ones that didn't make the grade????

At any rate, they are certainly made to a higher QC then the generic hunting barrel.

As for rifling type in true match quality barrels, really doesn't matter. It has all been tested over the last 125yrs both from govt testing and competition matches.

Rifling - number of grooves and land shapes - have never shown any affect on accuracy. All styles, numbers and shapes have been used to win all manner of competitions. Wish there was something that was definitive.

As for cleaning, compared to factory barrels, true lapped match barrels will always clean up easier and faster regardless of the manf.

YMMV
Jerry
 
Mystic Precision said:
I have only heard this second hand that the Factory Rem 5R barrels come from the Military contracts... whether same barrels or ones that didn't make the grade????
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That's a myth. They were simply a limited production run for one of their wholesalers. Not milspec, not factory seconds.
 
The way I understand it is that the accuracy is the same on both types of riffling , but the 5r will run longer between cleaning and be easier to clean ? Something like that anyway :)
 
In theory: Less bullet deformation and slightly higher velocity (due to rounded rifling).

The 5R Remington has a medium profile SS barrel. The earlier ones could only have come from the M24 machinery as Remington only had that line for 5R rifling. The new ones barrels are likely from the machinery making the comercial 5R Rewmington barrels as they now offer other 5R products en mass. But who knows for sure.

They shoot very well for a tactical precision rifle. Also the multiple examples I have shot are sub .5 moa with factory 168 Federal gold. They also seem to shoot most quality ammo well and their cold bore first shot is dead on even without a fouled barrel. As I found out today my reload 175SMK in my main one is decent but not up to the 168 gold. But scratching my head here, the 15( hornady stuff using steel instead of brass seems to shoot very well (Condomboy shot a 5 round group that was very good with that ammo). So I will be trying out some more of that stuff since 168 is considered questionable ballistically past 600 yards.

Bottom line the examples I've shot have been excellent. Others have reported similar results.
 
I forgot to add that there are also rumors the first ones were assembled in Remington's custom shop.

One more piece of 5R Remington trivia. KAC had huge sucess during their initial entries (and subsequent) due to the astounding accuracy of their AR308 entry. I have seen a few times that KAC was using Remongton 5R barrels for that first run at the AR308 contracts. When mentioned on a few forms KevinB didn't confirm or deny this information. So it is still unsubstantiated, but I've seen it pop up a few times. Would be good to find out for sure.
 
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I don't now ( and doubt anyone else on here does either ) know the truth behind the internet story that the first Remington R5's used barrels that didn't meet the specs for a military contract but it is, anyway, moot. The fact remains that these guns shoot very well - I bought one in 2007 and sold it to a buddy when I bought a TRG - the buddy still has, and shoots, the R% and, yes, it shoots real well. Last year I bought a second R5 to use as a hunting rifle ( bit heavy for that purpose so plans change ) and while it has only seen some 100 rounds, it too is a very, very good shooter. In my shooting travels I;ve come across a number of other R5 owners and all report the same - these rifles can shoot. Now I won't say they are all 1/2 moa guns because the truth of the matter is that to consistently produce 1/2 minute is some kind of special but I will say this: The R5's I've owned have produced sub-half and half moa groups and consistently achieve three-quarter or better moa. Now is this because of 5R rifling or not I cannot say but I will say that 5R rifling doesn't hurt and that clean-up appears easier than with other (non-match grade) factory barrels.
 
Epoxy7 said:
I forgot to add that there are also rumors the first ones were assembled in Remington's custom shop.

One more piece of 5R Remington trivia. KAC had huge sucess during their initial entries (and subsequent) due to the astounding accuracy of their AR308 entry. I have seen a few times that KAC was using Remongton 5R barrels for that first run at the AR308 contracts. When mentioned on a few forms KevinB didn't confirm or deny this information. So it is still unsubstantiated, but I've seen it pop up a few times. Would be good to find out for sure.
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First SR-25's where built with Remington 5R barrels.

These were the 24" Match Rifles. The Mil end users of the first guns had us change to a Obermeyer 5R

Since then we have done a variety of different manufacturers until starting our own in house barrel production in 2008.


We use a Boots Obermeyer type of 5R rifling in house.

I have tried a number of different types trying to get either more velocity or more...

You see a lot more dramatic accuracy difference at range when using different twists - not riffling patterns.
 
KevinB said:
First SR-25's where built with Remington 5R barrels.

These were the 24" Match Rifles. The Mil end users of the first guns had us change to a Obermeyer 5R

Since then we have done a variety of different manufacturers until starting our own in house barrel production in 2008.


We use a Boots Obermeyer type of 5R rifling in house.

I have tried a number of different types trying to get either more velocity or more...

You see a lot more dramatic accuracy difference at range when using different twists - not riffling patterns.
Click to expand...

BINGO...

Jerry
 
My friend has a rem 5r milspec and they shoot good for a factory rifle.
I don't think the 5r rifling has any advantage over conventional rifling .
 
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KevinB said:
First SR-25's where built with Remington 5R barrels.

These were the 24" Match Rifles. The Mil end users of the first guns had us change to a Obermeyer 5R

Since then we have done a variety of different manufacturers until starting our own in house barrel production in 2008.


We use a Boots Obermeyer type of 5R rifling in house.

I have tried a number of different types trying to get either more velocity or more...

You see a lot more dramatic accuracy difference at range when using different twists - not riffling patterns.
Click to expand...

Good to know! Thanks for the post KevinB.
 
Tomochan said:
I don't now ( and doubt anyone else on here does either ) know the truth behind the internet story that the first Remington R5's used barrels that didn't meet the specs for a military contract but it is, anyway, moot. The fact remains that these guns shoot very well - I bought one in 2007 and sold it to a buddy when I bought a TRG - the buddy still has, and shoots, the R% and, yes, it shoots real well. Last year I bought a second R5 to use as a hunting rifle ( bit heavy for that purpose so plans change ) and while it has only seen some 100 rounds, it too is a very, very good shooter. In my shooting travels I;ve come across a number of other R5 owners and all report the same - these rifles can shoot. Now I won't say they are all 1/2 moa guns because the truth of the matter is that to consistently produce 1/2 minute is some kind of special but I will say this: The R5's I've owned have produced sub-half and half moa groups and consistently achieve three-quarter or better moa. Now is this because of 5R rifling or not I cannot say but I will say that 5R rifling doesn't hurt and that clean-up appears easier than with other (non-match grade) factory barrels.
Click to expand...

On another site someone chimed in stating they were a Remington employee and the 5R rifles were made with barrels off the M24 line but weren't rejects. Seemed insulted at the suggestion. It was also stated they put these rifles together to be 1/4 moa rifles. The information and how it was written out seemed credible but I can't confirm it.

That being said, I can say that the one I bought was well under .5 moa centre to centre with 168 gold. Other rifles are showing up now too though to give the 5R a run for the money. The Savage LE/Mil sale one is also 5R rifled but with a 1:10 twist instead of the military favoured 1:11.25 of the 5R milspec Remington rifle. The SSG3000 is another reported sub .5 Mia out of the box tactical rifle. But... At $1100 roughly for a 5R which had an HS stock along with bead blast SS barrel/receiver and fairly light weight the 5R still holds out as a good deal. The Savage is cheaper but the stock sucks (although it still shoots), and the action isn't as smooth as the 5R. Changing that stuff out on the Savage quickly raises the costs so it's not the super bargain rifle anymore. The SSG3000 is $1600 and weighs 12 pounds. So significantly more and weight is a lot higher. The 5R milspec still holds an interesting niche.

I once owned 3 of the 5R milspecs. I don't buy duplicates of crap firearms that don't live up to their reputations. I sold one to Fireball and have another in a tan/black HS stock. I haven't shot this one yet. Lineofsite has two 5R rifles and both are capable of sub .5 moa. I have shot sub .5 moa with his rifles as well.

I once mentioned this rifle to a gunsmith up North. I could see him rolling his eyes. I showed him the targets and that stopped. 5 years later I was up that way and started talking with the same gunsmith. He said his Dad bought one and then gave it to him. He bedded it and tweaked it. He remarked it was like getting a custom barrel for free. This from a guy who builds custom rifles and many on here would recognize the name of the company.

So bottom line. They shoot, are affordable and are still in a small class of high end non custom rifles. About 6 years ago they were pretty much in a class of their own, despite all those saying all factory rifles are the same, you need to buy a custom barrel etc. These rifles were a special run and a non catalogued rifle. For once the hype matched the results. Yes you can built better and will most likely get one that can out shoot a 5R, but there are certainly no guarantees of that and good luck coming in at the same price point.
 
The theory behind 5R was two fold: Having an odd number of grooves offset the lands so that there was less tendency for the bullet to distort because of directly opposing lands. The "R" in 5R stands for radius(ed) as in there is a curved transition from the bottom of the groove to the vertical wall of the land. Obermeyer did lots of study into bullet jackets and he believed this configuration provided for better bullet obturation as bullet jackets conformed to barrel rifling this way. He did not invent this type of rifling, it has been around for over a hundred years, he simply main-streamed it. The theoretical benefit is in velocity but there is no documented evidence anywhere that it makes a pinch of coon #### difference. If the Remington 5R barrels are more accurate, it is because they are drilling straighter holes, not because of the rifling shape.
 
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