Convert a 308 to ????

[carlsbad]

6xc is pretty easy to get right.

 

[Baddog0302]

6 BR in a Remage set up, that way when you want a change just order a bbl.
One question you should ask who ever you deal with for a Bbl. is What is your delivery time ??

 

[SteveOak]

Recoil comparison;

308, 168gr bullet, 2,700fps mv, 9 lb rifle, 15.4 lbs recoil
6.5 CM, 142 gr bullet, 2,700 fps mv, 9 lb rifle, 11.7 lbs recoil
6 BR, 115 gr bullet, 2,700 fps mv, 9 lb rifle, 6.3 lbs recoil

For those bullet weights, up to 600 yards, the 6 BR would be the most accurate, even more accurate with 105 to 108gr bullets.

Beyond 600 yards the 6.5 CM would have an advantage in resisting wind deflection but not accuracy.

 

[Crackerbacks]

I had a 6.5x47 a couple years ago and sold it. I might be in the minority but I was not a fan. I felt the recoil (140 hybrids) was a lot sharper than the 308, I know the 308 has more recoil but it seems more of a push to me.

I rebarreled again to the 6 brx and I couldn’t be happier

 

[HTSmith]

6br is sounding good. What length barrel?

I have three of them. One 26" and two 30". With 30 Gr of Varget they all shoot the same speed. 26" is enough but the 28 that was suggested would give you room for a setback.

 

[hoz53]

6.5 Creedmoor of course. It's the best cartridge in the world!!!

View attachment 1052764

at first i thought this post was by hog

 

[alinwa]

I have a Remington 700 in 308, and really would prefer a smaller, lighter recoiling cartridge for competing mainly F-class 300 yds, but still capable of possibly competing at 600. Without altering the bold face too much, or at all, what cartridge do you suggest that I re-barrel it to? I was looking possibly at 6BR. Good choice, or is there a better option? Thanks guys.

Maybe I missed it, if somewhere you indicate "single shot" I apologize, but I think a question that needs to be asked is...."do you intend to shoot from the magazine?"

 

[fatelvis]

Maybe I missed it, if somewhere you indicate "single shot" I apologize, but I think a question that needs to be asked is...."do you intend to shoot from the magazine?"

I will only be loading one at a time.

 

[shooter65]

Do a switch barrel like mine. 6 Creedmoor and a 308.


Rounds 6-10 on a new PVA Rock Creek barrel.

 

[LVLAaron]

I'm in the same boat as OP. Have a Sporter benchrest rifle I want to convert to something in 6mm.

Northland says they have Rem/Age barrels in "6 BR Norma" - Is that the same as 6br?

 

[STOMP442]

I vote for the 6XC. The more of these I build the more I like it. Just as easy if not easier to tune a load as the 6BR and a little more performance for stretching things out there a ways plus a little more boiler room for the heavier bullets.

 

[Terry]

I'm in the same boat as OP. Have a Sporter benchrest rifle I want to convert to something in 6mm.

Northland says they have Rem/Age barrels in "6 BR Norma" - Is that the same as 6br?

Yes

 

[LVLAaron]

Awesome. Thanks! Looking forward to building this gun!

 

[KevinThomas]

I'm in the same boat as OP. Have a Sporter benchrest rifle I want to convert to something in 6mm.

Northland says they have Rem/Age barrels in "6 BR Norma" - Is that the same as 6br?

No, not exactly. The 6mmBR Remington is normally set up with a slower twist and a significantly shorter throat, intended to use 68-70 grain bullets. The Norma version runs a faster twist with a longer throat, and is intended to use 105-107 or heavier bullets. Same brass, but the throating and twist differences mean that they have to be identified as two different cartridges for CIP purposes. Same dies, same brass, though.

 

[fatelvis]

As I understand it, my 308 boltface will work fine, as-is for the 6BR, but does the firing pin hole have to be bushed, in order to use it with the small rifle primers?

 

[alinwa]

As I understand it, my 308 boltface will work fine, as-is for the 6BR, but does the firing pin hole have to be bushed, in order to use it with the small rifle primers?

nope

 

[LVLAaron]

No, not exactly. The 6mmBR Remington is normally set up with a slower twist and a significantly shorter throat, intended to use 68-70 grain bullets. The Norma version runs a faster twist with a longer throat, and is intended to use 105-107 or heavier bullets. Same brass, but the throating and twist differences mean that they have to be identified as two different cartridges for CIP purposes. Same dies, same brass, though.

Interesting. Northland does their own work as I understand it, I will call them and get the reamer specs for their 6br and report back.

 

[Dusty Stevens]

Interesting. Northland does their own work as I understand it, I will call them and get the reamer specs for their 6br and report back.

Just make sure its the norma and not the remington br. We’ve been thru this, posted pictures of both with measurements and all, and even had shirts made.

http://forum.accurateshooter.com/threads/important-note-about-6mm-br-lapua-brass.3948505/

 

[65 fan]

I have a Remington 700 in 308, and really would prefer a smaller, lighter recoiling cartridge for competing mainly F-class 300 yds, but still capable of possibly competing at 600. Without altering the bold face too much, or at all, what cartridge do you suggest that I re-barrel it to? I was looking possibly at 6BR. Good choice, or is there a better option? Thanks guys.

im going to say 65 creedmoor.we have a bunch of creedmoor bashers here but mine works good.i have not been real constitance yet because i have been changing things looking for the best combonation.that is over i have found the powder in am going to use for the rest of this season.if you have any questions about the 65 creedmoor pm me your name and #.im not going to wast my breath here with the bashers!!i will leave the bashers one thought though. i shoot in the light gun class at williamsport at a 1000yrds.there are 2 65 creedmoors being shot there this year.if you look at the top 100 groups shot this year where are they on the list #1 and # 3 # 11.so you can do the math.good luck in whatever cal you choose. just pratice a lot and shoot strait

 

[hoz53]

Interesting. Northland does their own work as I understand it, I will call them and get the reamer specs for their 6br and report back.

for practical purposes the norma version is the only one people use these days. northland will have that version.