6BR LOAD VS 6BRA

[Link]

I just shot a .309 and a .247 at 100, while fireforming. My brass has been hydroformed but still need a fireform. 105 VLDs over 30gr Varget. I'm using a Tasco scope until I get the mounts for the Siii. A Panda - 1x8 tube. I can't wait to get further out, shoot my ladder and tune.
Don

PS Where did ET51 go?

 

[Area51]

I went back to the Oasis Lab environment.
It has become clear that i was hurting peoples feelings and creating to much of a stir in the villages.
Really don't want to lift the rock any higher.
The DNA demographic here indicates most cannot handle the truth.
Believe it, or not.

 

[Curious]

I went back to the Oasis Lab environment.
It has become clear that i was hurting peoples feelings and creating to much of a stir in the villages.
Really don't want to lift the rock any higher.
The DNA demographic here indicates most cannot handle the truth.
Believe it, or not.

Im still waiting...

 

[KenOath]

We’re all waiting...

 

[kountryboy2]

Is area51 really Bob Mueller?

 

[Area51]

Whats everyone waiting for, dinner, a better life, a really good day at the range, maybe the waco-lyst event everyone seems to be worried about.
Get comfy, bring food and bev, it might be a while, a long while. If you smoke cigars or a pipe bring tobacco and relax.

• 

 

[kountryboy2]

Whats everyone waiting for, dinner, a better life, a really good day at the range, maybe the waco-lyst event everyone seems to be worried about.
Get comfy, bring food and bev, it might be a while, a long while. If you smoke cigars or a pipe bring tobacco and relax.

• 

Yep just what I thought. All hat no cattle.

 

[Area51]

Yep, just what i thought, truly undeserving.

• 

 

[Link]

I don't mind a little bullshit on my posts however enough.
My original post was , trying to understand why a AI would shoot better than a Old School Br using the same load? A lot of the data I have seen is the same load for both. So I am assuming the advantage is case volume. I will shoot a ladder and see if I can find a node with a little higher velocity than a BROS.
Back to our regularly scheduled program?
Don

 

[JFrank]

I don't mind a little bullshit on my posts however enough.
My original post was , trying to understand why a AI would shoot better than a Old School Br using the same load? A lot of the data I have seen is the same load for both. So I am assuming the advantage is case volume. I will shoot a ladder and see if I can find a node with a little higher velocity than a BROS.
Back to our regularly scheduled program?
Don

Well said sir,
Some people just like to stir the pot.
J

 

[Alex Wheeler]

I cant speak for others, but in MY case the reason I ordered a 6BRAI reamer in the first place is because I felt the dasher was on the edge of too big. I was trying to find something that would run with a dasher but not "blow up" for no good reason like we can see with the dasher. I think the BRA does just that. It can and will still go out of tune, but it seems to do it less dramatically and I do believe 100% it shoots smaller. I have never compared it to a 6BR. It was not meant as an alternative to the 6br for me, it was an alternative to the dasher. So if your happy with a br, Im not sure why you would change. Most 1k guys are on a dasher not a br. The br is much more popular in 600 and rightfully so.

 

[Area51]

Sorry Don, your right.

I have been comparing posted loads for the 1/8 t , 105 bullet in the 6 br and 6bra and haven't found much difference . You are not alone . There are many top rate shooters finding the same thing. I am not going to start name dropping, we are mostly NBRSA out my way, maybe the other group on the East Coast IBS?.
Or am I missing something? No you are not IMO. And my data has proven it testing and in matches. The big kids shoot at 1k, the 600 yd game is much more competitive so its much more up for grabs. many rifles and many shooters do well at 600 every month. Relay. conditions weigh in very heavily to sort out the fine differences.
Does the advantage come from the 4o* shoulder ? It does not, because many of us do not believe there is any advantage, none, zero vs a BR.
Don

Your right, pls see inserted comments;
New barrels tend to outperform where the previous ones left off, usually, when its all done correctly and well. So the BR, BRI, Dasher, XC, a fellow gets a hot new BRI and wow, its never been so good.
The comparison of Varget from the standard gospel BR loads is not the correct test basis. In either the BR or BRI (BRA is an outdated term, the reamer mfgs use -I- now, as improved, since Ackely is no more. And this was not one of his cartridge mods.) The correct powder is , here it comes, going public,,,,,, well dam if i do then all my cronies out here will know the magic and i am playing catch up again, its in the public data/ reloading books and on line resources. But does need to be developed. My reamers are all proprietary as most really good ones are when an effective deign collaboration occurs vs trial and error. So admittedly my reamer, my chamber, hand selected barrels, yes it all adds up and all does matter.
And after all the BRI is such a sex symbol out here all of a sudden, i really don.t want to upset the trend, right now, the trend is my friend. I spent allot on barrels, dam a machine shop, why should i just give all the expensive data and findings away vs reap some more match benefits?????
Now in defense of the BRI i will add that in shorter barrels the few extra grains of powder my help ever so slightly, i dont believe its enough, however, i do use 30" bbls on my 17# bench rifles.
I think you are going to discover/ confirm, that volumetricly there is no meaningful difference between the two cases. Speed or accuracy wise.
Good shooting.
Gary

 

[Area51]

Well said sir,
Some people just like to stir the pot.
J

And the pot needs to be stirred for things to come out right, sooner or later !!

 

[KenOath]

I wanted to try the BRA because I’d read that’s it’s tune window almost rivaled the straight BRs, in my initial testing at 200m I found it was fairly close but once taken out further I found the window shrunk. Accuracy wise they are very close also.. I’ve just chambered a second BRA so will see how it fares, then plan on chambering another straight BR to compare with a fresh memory as I haven’t shot a straight BR in 18months.

 

[JohnMill]

Nope. Like you said, you need fresh barrels. When its time to re barrel, have it chambered in a BRA. No cost change to the shooter. Same powders, bullets, primers, cases, as the 6br or dasher. Dasher seating dies work as is, dasher sizing dies get cut down or bought new for $75. Lots of smiths have reamers. We change things to try and find something better. Its that simple. Your BRA did not perform for you Gary? What bullets and powders did you try? What barrel?

When I read Johara1s documentation of all the things he did to capture the Agg records ( when he did) I finally knew that what I would have to overcome was me not putting that kind of effort into it.
The guys leaving us in the dust are the guys raising the dust. Cain't make it no clearer than that. LOL

 

[CaptainMal]

On the fire-forming issue there is near nothing to do. Headspace is the same on a BR case so no jamming or false-shoulder ( like Dasher) needed. Steve Krauss (BT1) just got a 2nd last Saturday in a packed 600 yard steel shoot while fire forming. Just use a BR load, shoot well then use the formed case the next time with around another grain of powder for more performance.

So simple even I can do it.

 

[urbanrifleman]

I have never compared it to a 6BR. It was not meant as an alternative to the 6br for me, it was an alternative to the dasher.

That is VERY COOL. I never knew that. Makes total sense.

I am perplexed a little by the idea that the 6BR will not compete at 100-200 but the BRA will. That doesn't make ANY sense.

 

[Link]

That is VERY COOL. I never knew that. Makes total sense.

I am perplexed a little by the idea that the 6BR will not compete at 100-200 but the BRA will. That doesn't make ANY sense.

From what I have gathered the 6br is no match for the 6ppc at 100 and 200.
But further than that it is a different story.

 

[Alex Wheeler]

I do not recommend the BR based cases for short range competition. They are for 600-1000.

 

[walker2713]

Sorry Don, your right.

Your right, pls see inserted comments;
New barrels tend to outperform where the previous ones left off, usually, when its all done correctly and well. So the BR, BRI, Dasher, XC, a fellow gets a hot new BRI and wow, its never been so good.
The comparison of Varget from the standard gospel BR loads is not the correct test basis. In either the BR or BRI (BRA is an outdated term, the reamer mfgs use -I- now, as improved, since Ackely is no more. And this was not one of his cartridge mods.) The correct powder is , here it comes, going public,,,,,, well dam if i do then all my cronies out here will know the magic and i am playing catch up again, its in the public data/ reloading books and on line resources. But does need to be developed. My reamers are all proprietary as most really good ones are when an effective deign collaboration occurs vs trial and error. So admittedly my reamer, my chamber, hand selected barrels, yes it all adds up and all does matter.
And after all the BRI is such a sex symbol out here all of a sudden, i really don.t want to upset the trend, right now, the trend is my friend. I spent allot on barrels, dam a machine shop, why should i just give all the expensive data and findings away vs reap some more match benefits?????
Now in defense of the BRI i will add that in shorter barrels the few extra grains of powder my help ever so slightly, i dont believe its enough, however, i do use 30" bbls on my 17# bench rifles.
I think you are going to discover/ confirm, that volumetricly there is no meaningful difference between the two cases. Speed or accuracy wise.
Good shooting.
Gary