Help with re-chamber Idea .243 to 6mm BR

[Tarheelpwr]

Hi,

I'm thinking of getting a new Savage 243 and rechambering it to 6mm BR. I know the 22" is less than optimal, but is it even worth doing? How much would the 1:9.25 twist mess with the performance?

Anyways, has anyone done this? What were the results? If not, what is everyone's idea on this? Good/bad/indifferenct?

I'm looking to get a "better than average" target rifle out of this.

Chris

 

[roninflag]

Tar - the barrel quality has more to do with accuracy than the caliber. in order to get a better target rifle you need a better barrel. the 6mmbr needs a davidson single shot ramp , not a repeater. go to 6mmbr.com for more info. . savage guys can add more info, but you could get a 6mmbr barrel and screw it on since you have a savage. as far as twist goes it is the same thing, if you have a GOOD 8 twist barrel or a 9.25 or a 12 or a 13.5 depending on what weight range of bullets you intend to shoot . i have a 6ppc , 6br and 243s.

 

[Garycrow]

The 6mmBR will feed in a savage repeater with the centerfeed magazine. I've got a M12 BVSS that started life as a 22-250 and is now a 6BR, it feeds well with the centerfeed mag.

As for rechambering a 243 to 6BR, I suppose a gunsmith could cut off the chamber then rechamber and rethread, but I doubt it'd be worth it with a factory barrel. For all the work you'd likely not save much money over going with an aftermarket pre-chambered barrel and you're still stuck with a factory barrel. The 9.25 twist isn't likely going to shoot the 105-107gr. bullets.

A CBI pre-fit is $300 from northland shooting supply, just screw it on and go shooting.

 

[Tarheelpwr]

The 6mmBR will feed in a savage repeater with the centerfeed magazine. I've got a M12 BVSS that started life as a 22-250 and is now a 6BR, it feeds well with the centerfeed mag.

As for rechambering a 243 to 6BR, I suppose a gunsmith could cut off the chamber then rechamber and rethread, but I doubt it'd be worth it with a factory barrel. For all the work you'd likely not save much money over going with an aftermarket pre-chambered barrel and you're still stuck with a factory barrel. The 9.25 twist isn't likely going to shoot the 105-107gr. bullets.

A CBI pre-fit is $300 from northland shooting supply, just screw it on and go shooting.

Thanks. I wasn't thinking about the loss in length either. Startin at 22" doesn't leave much.

What is CBI? Criterion?

Thanks to buth of you.

 

[AZShooter]

Pretty easy to find out what CBI was. Just typed it in CBI then added word barrels and it popped up. They are called Criterion Barrels Inc. Here is the link:


Criterion Barrels, Inc.

 

[Tarheelpwr]

Pretty easy to find out what CBI was. Just typed it in CBI then added word barrels and it popped up. They are called Criterion Barrels Inc. Here is the link:


Criterion Barrels, Inc.

Yea, I realized that after I asked.

What's it like dealing with Jim at NSS right now? I'm just a little skeptical with the small shops bc gettin ahold of Stockade and SSS is all but impossible.

Chris

 

[Zep]

I don't know how your numbers are going to add up but you might want to go to the Shilen site and look at their barreled actions. It is my understanding their action is made by Stiller (please confirm this for yourself). By the time you do the rebarrel this might be less expensive and you might get a better end product.

Please report back if you go this route as I have been thinking about this for a 6BR build.

I have read a lot of very good things about the 6BR. And another LRH member brought me up to speed as well. I see the 6BR in my future. For me, I am thinking chambered for no-turn Lapua brass and a 1-12 twist so I can shoot 70-80 grains at eastern woodchucks. I would like to see a 26 inch barrel.

 

[sinarms]

If you had a varmint or bull contour you could cut the chamber off and rechamber it to 6mmbr but the factory sporter barrel doesn't leave you much room. There are tons of 6mm br barrels out there that are 12-14 twist because they are shooting the lighter bullets. You just need to figure out what weight you want to go with and get the proper twist.

 

[Tarheelpwr]

I don't know how your numbers are going to add up but you might want to go to the Shilen site and look at their barreled actions. It is my understanding their action is made by Stiller (please confirm this for yourself). By the time you do the rebarrel this might be less expensive and you might get a better end product.

Please report back if you go this route as I have been thinking about this for a 6BR build.

I have read a lot of very good things about the 6BR. And another LRH member brought me up to speed as well. I see the 6BR in my future. For me, I am thinking chambered for no-turn Lapua brass and a 1-12 twist so I can shoot 70-80 grains at eastern woodchucks. I would like to see a 26 inch barrel.

At $1500-$1800, I won't be going Shilen barreled action route. If I'm dropping that kind of money it will be for hand picked items.

Also, if I go 6BR, it would be 1:8 twist for the heavy bullets, so not sure how much light I can shed for you.

After talking with Kevin at Stockades, I'm really leaning towards a Savage tuned by him in 7mm WSM. Either than or maybe the 6BR, but I want to really stretch it legs and I'm not sure the 6 will get me there. I already have 6.5 Grendel on the way for medium range targets.

 

[Zep]

Thanks for getting back to me. I always like to hear what others are thinking.

If you have any interest in the 6BR you should spend some time on 6mmBR.com. It depends what your goals are but I know of at least one other very good shooter who is a member here who opened my eyes to the 6BR. With the 1-8 twist that caliber will reach out farther than I will ever need. If you want to go far I would suggest you consider a good stiff enough action to handle the heavier barrels. It is my understanding we are going to need that for a heavy contour 26 inch barrel.

Of note, I don't want to spend 1750 for a barreled action either but we have to keep in mind Shilen will use their heavier/longer premium barrels if it is the non-savage style build. Also have to keep in mind that is a 1000. well respected Stiller single shot heavy duty custom action. I am still looking and for that number I will still consider having a good smith build me something but I am still on the fence. And maybe less on the fence that I thought earlier today. I could have a good smith stock and bed it properly for me.

Thanks for posting.

www.6mmBR.com

 

[sinarms]

You could have a Stiller action barreled with a Bux barrel for ~$1500, add a trigger choice of stock and bed you would be a little over $2k

 

[Tarheelpwr]

Thanks for all the feedback. I've spent a good bit of time on 6br. Tons of good info. I also know what's possible I'd I throw enough money at it. I wast very clear and thats my fault. This is a very budget minded project since I have a baby on the way. I really want to test the savage action for my needs.

I think I'm going with a Stockade tuned barreled Savage action. That puts me into that part of it for under $1k. I'm pretty sure the Savage will meet my needs. This is also a sort of test run for a future 338 project. I pla to save for a couple years on that one. I want to know if a Savage will work or if I need to spring for a custom.

Chris

 

[Tarheelpwr]

I also had some questions about optics mounting.

I would love to use my scope across a couple different guns so that I can buy a nicer one and multipurpose it. I know the XLR chassis system (future project i'll be saving a couple years for) needs a mount about 1.35" high. AR's can also use that with no issue.

My question is this. How will a bolt action with normal A5 style stock (either Choate tactical of Stockade prairie dog) fair with an optic mounted 1.42" high like the Aadland Aadmount uses. That is perfect for the XLR and AR, but I have no clue on the bolt gun.

I know it's too high with no modifications, but would adding and adjustable cheekpiece to the equation help? How about the Choate tactical stock with the 1" cheek riser?

Thanks,
Chris