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6bra vs 6arc

Common case head (6br) vs less common case head (6arc)
I don't see that as much of an argument. Shooting a Savage with the floating bolt heads in a short action I have a bolt head to fit the 223, ARC/Grendel, and the 308 family.

How often do most people rebarrel a rifle into a completely different chamber?
 
I don't see that as much of an argument. Shooting a Savage with the floating bolt heads in a short action I have a bolt head to fit the 223, ARC/Grendel, and the 308 family.

How often do most people rebarrel a rifle into a completely different chamber?
The OP asked for thoughts. I would love to
Rebarrel my 243 to something else, but then I have to buy new components, dies, etc, plus the barrel and chambering work, so I don’t.
 
For 100gr class bullets the 6ARC seems underpowered a bit. I’d start with 6BR and go up depending on your velocity requirements.
I am competing in a league against a whole group of people shooting BR, BRA, Dasher. They are all shooting 100gr class bullets. Mostly between 103gr to 110gr bullets which is the same as what I am using. After speaking to all of them my 105gr ARC is firing at the same velocities that they are loading to..
 
The OP asked for thoughts. I would love to
Rebarrel my 243 to something else, but then I have to buy new components, dies, etc, plus the barrel and chambering work, so I don’t.
So? What's the difference between rebarrel or buying a whole complete separate rifle in a different caliber?
 
I am competing in a league against a whole group of people shooting BR, BRA, Dasher. They are all shooting 100gr class bullets. Mostly between 103gr to 110gr bullets which is the same as what I am using. After speaking to all of them my 105gr ARC is firing at the same velocities that they are loading to..
What velocity's are you getting in the arc case?
 
Thoughts?
After all this, that is a pretty open ended question. Pro's, Con's? General feeling/observations?

6ARC, I did it in a bolt rifle because of the league I shoot. The 223 wasn't cutting it and two years ago components and parts to build a BR were nowhere to be found. What was available was at astronomical prices or on backorder with no date.

Now after 2 weeks of league shooting I am in 6th place with a 386/400.. This shooting a stock Savage action and trigger with a Shilen barrel. It's inexpensive, competitive and I'm having fun!
 
I concur
All the arc and grendle cartridges are really fun in a gasser but short of benchrest and 6ppc I don’t see the allure of those in a bolt action.
Not much difference between a PPC/ARC and a 6 Grendel. Without good brass, ya got nothing. The Lapua Grendel brass is excellent, equal to 220R brass mostly used to form PPC. There's a reason to do a 6 Grendel...It sure is easy to neck down, load and shoot. As someone who might have more experience with a 6 Grendel than possibly anyone, shooting it in a bolt action BR rifle, I can say that it will compete with anything I've ever shot. No fire forming and a tad more capacity for slower lots of powders is reason enough to me. That tad bit of capacity difference is negligible with lighter bullets but becomes more critical with the heavies. Same as how a 280AI can run right with a 7Mag with lighter bullets, but not with heavies. No replacement for displacement. Lol!

Biggest reason that the ARC and Grendel can be loaded to BR speeds is the reduced bolt thrust of the smaller diameter case of the ppc/arc/grendel case. Given equal brass, they simply handle pressure better than a larger case diameter can. It also leaves a tad more metal around the chamber...fwiw.
Both aspects aid in how they handle high pressures.
 
I concur
All the arc and grendle cartridges are really fun in a gasser but short of benchrest and 6ppc I don’t see the allure of those in a bolt action.
See, that's the beauty of rifles. You don't need to "See the Allure" nor are you required to build and shoot one in a bolt rifle. I and others enjoy ours and we are all that matter. The ones that actually do own and shoot them.
 
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ARC was designed to be a weeny cartridge for gas guns. I don't know why anyone would specifically use/build a bolt gun around it.
You are correct if you're doing a bolt gun might as well do somthing bigger. Thought about making a 300m rifle with it, but doesn't make sense.
Crane tested it in short barrel configuration and WERE NOT impressed with it. Definitely part of the Hornady hype machine which they have down to a science.
 
How do you lump a Dasher as being like the ARC when the Dasher is shooting a 105 class bullet 200 fps faster?
I agree with you. I think the basis comes from the PRS type crowd who is taking something like the 6GT with even more capacity than a Dasher and down loading it to 6BR speeds or even lower to reduce recoil and being able to watch their own trace. I have ran Dashers up in the 3070-3080 range in 600/1K BR. It was hot but with the right set up, totally doable. 6BRA are able to run the 3000+ node. 6BR can run 2900. These speeds are probably with 28-30" barrels and not 24-26". Sometimes people just don't know what they don't know yet.
 
I agree with you. I think the basis comes from the PRS type crowd who is taking something like the 6GT with even more capacity than a Dasher and down loading it to 6BR speeds or even lower to reduce recoil and being able to watch their own trace. I have ran Dashers up in the 3070-3080 range in 600/1K BR. It was hot but with the right set up, totally doable. 6BRA are able to run the 3000+ node. 6BR can run 2900. These speeds are probably with 28-30" barrels and not 24-26". Sometimes people just don't know what they don't know yet.
You said a mouthful with your last sentence.
 
So you are telling us that a cartridge such as a 6CM or 308 is needed to shoot paper targets at 300yds! Sorry but I don't see the need to burn up that much powder to punch holes.
No I'm not saying that. The reason I chose to not do a 6ARC for a 300m International rifle is balletically its not much different if at all from my .223 palma rifle. Only difference being bullets are more expensive so I didn't go with it.

It is just another 6mm AR chamber like the Hagar, Turbo, and the dozen other 6mm cartridges. You are limited on pressure from the AR itself. If shooting a bolt gun and you don't want the power of the big 6's like the .243/6CM and others then something like the Dasher, BR and all of those derivatives makes more sense as you can push them harder if you want.

Build the 6mmARC if you want. I have a can of brass sitting downstairs and everytime I've thought about building a 6mm ARC for something I just can't justify doing it because it doesn't offer anything I don't already have.
 
Build the 6mmARC if you want.
I did. Also because of it and moving from a 223 Savage 12 with a 26' barrel I have also just shot back-to-back two weeks in a row the best scores I have ever posting in 4 years of league.

Because of the range we shoot we are confined to shooting a max of 300yds. Also as stated I am shooting at or very near the same velocities as those shooting 6BR, BRA and just slightly slower than those shooting Dashers. No one that I know of in this group are shooting anywhere near max loads.
 
I did. Also because of it and moving from a 223 Savage 12 with a 26' barrel I have also just shot back-to-back two weeks in a row the best scores I have ever posting in 4 years of league.

Because of the range we shoot we are confined to shooting a max of 300yds. Also as stated I am shooting at or very near the same velocities as those shooting 6BR, BRA and just slightly slower than those shooting Dashers. No one that I know of in this group are shooting anywhere near max loads.
What is your barrel length and what the is the bullet/velocity your getting. Maybe you'll convince me to do one.
 

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