6BRA load data

[Alex Wheeler]

Lol well that aint too bad for someones first year tuning a rifle for 1k paper now is it? Which was also a light gun shooting in the heavy class. Was yours a light gun?

EDIT: Not to mention is was only .043" larger Using some crappy old berger hybrids.....

I also shot a LG in HG with hybrids when Deep Creek was shooting with Williampsort. The 6 and 10 match aggs were 4.343" and 5.650". They can shoot if you get a good lot. And I was shooting a dasher

 

[Tim Singleton]

@Whitehunter

Robert,

I believe this must be the picture you're referring to that I posted in another thread.

View attachment 1118547

This photo, is of an empty bench an hour and a half before the safety meeting. I was just checking out the scenery, and seeing if the flags needed batteries. The photo was just to illustrate the poor lighting in reference for a optics thread. The barrels aren't shaded until at least noon, plus or minus depending on the month. I assure you sir, no one I have heard of is shooting matches at 04:44. David would have beat my old Dasher record by SIX PLUS inches either way.


Guys,

My own personal bests have all come since switching to the BRA. Both in aggs and also single targets. I spent 9 years shooting dashers, a lot of them williamsport rules (so lot's of 10 shot groups) and finally shot a 10 shot group in the 3s around 2016. I switched in 2017 (in heavy only that year), and since that time have shot 4 more. That tells me all I need to know. We did NOT just start shooting at sunrise in 2017 for this to magically happen.


Now let's get back on to "BRA load data" if we could.

Tom

That’s a fair amount of wind for day break

 

[WIB3]

I done with this crap. Would much rather watch the Trump rally in Ohio. Because of him, we will continue to be able to have this debate. God bless.

 

[Alex Wheeler]

Should never have been any crap. Just load data...

 

[mikeeg02]

You did not shoot that group. I was there. And have you backed it up. I have.

I never claimed to have shot it. I flat out am proud to say Mark Frye shot it. I did tune the rifle though, and worked over the bullets.

And again, this was in a 3" forearm, 16.4# rifle, which is less than ideal in this game IMO. My gun handling is getting better, I have shot some 4s. I am learning and improving as quickly as I can.

EDIT: Not that it matters, but I have shot a couple of matches where the first or last 9 were in 3". Ill get all ten of them in there eventually, dont worry.

 

[WIB3]

Agreed. Hope someday to meet you and all the great shooters in Montana.

 

[tom]

That’s a fair amount of wind for day break

It's just thermals. We wait it out, gets better around 8AM.

Tom

 

[Tim Singleton]

It's just thermals. We wait it out, gets better around 8AM.

Tom

Bound to be interesting some of those tails are up almost 90degree
That white material pretty heavy too

 

[Northridge]

Agreed. Hope someday to meet you and all the great shooters in Montana.

your welcome at Deep Creek anytime. it would be fun

Shawn Williams

 

[Northridge]

Alex as your aware there has been lots of testing "behind the line" this season in regard to the little 6BRA and the things that might make it even more special for seasons to come. some of the results average but some "secret sauce" has really bubbled to the top, it will be exciting to start a fresh 2020 shooting season with the things discovered. maybe we will have some added knowledge for this thread stay "tuned"

Shawn Williams

 

[FrankG]

Frank,

That’s a good idea!

I put out a 100 yard Dasher Challenge a few years ago. I probably went through 30 Dasher barrels and the best aggregate I could put up was around a .230 to 240 at 100 yards. The Grinch or 6BRA will shoot circles around it! Not a single person posted a competitive agg from a Dasher.

A guy like Mark would be a good candidate to give it a try! Or we can just give it a few years!

Bart

Mark and I where talking yesterday as he picked up a used bench gun. It's in 6ppc. Anyways he’s leaning hard at putting a new barrel on it and I’m pretty sure he’s gonna convert it over to a 6BRA. We have the reamer. I’ve got dies plus as a added bonus Mark already makes his own bullets (well for his PPC guns) and we’ve talked about having bullet dies made for 7mm but maybe will swing it over to a heavier 6mm bullet!

We talked to one of the ammo/bullet makers a while back about doing some load testing for 6PPC. We’ve already made the pressure test barrel and shipped it to them and Mark is close to finishing making the rounds for the testing. Gonna be interesting to see what you guys are running pressure wise on that dam PPC round!

About 3 years ago we did make a pressure test barrel in 6 Dasher for a powder manufacturer. It was a 8 twist and 30” long and they where pretty impressed with how it shot. Think I’ll reach out to them and a couple of others and see if they would be willing to run a test of some sort between the two rounds.

 

[Whitehunter]

It’s just a matter of time! For Three years I’ve been saying the Dasher was overbore and threw shots! Took a lot of heat over it. Now, others see it to! Don’t get me wrong the Dasher with the right reamer, right powder, right shooter is still formidable. But the 6BRA has the edge in agging ability, ease of tuning, and making brass.

In the 600 yard arena most of the matches I’ve been to, have been won with either a 6BR or 6BRA. Now if you head over to Piedmont you’ve got some pretty tough guys over there like Chris Nicoles and Jeff Godfrey that can wear you out with a Dasher! But I’ve seen several shooters go from the Outhouse to the Penthouse and the only thing they changed was ditch the Dasher for a 6BRA! That includes yours truly!

Probably a better test would be to put a Dasher and a 6BRA in the hands of a relatively new shooter. That would be fun to see.

Most of the top guys can figure out how to make any decent combination work! I’m not married to any caliber. I’ll shoot whatever makes me the most competitive and the Dasher ain’t it folks!

Bart

Shooting at 1000 yards with any caliber for group and score are is it score and group is not easy. There is a lot that can happen and does happen before the bullet reaches the target. I would think form any caliber that is tuned it would be the shooter. A small condition is hard to see from bench to 1000 yards. Its hard to hold proper hold off (Kentucky windage) for the change and hard to wait for the condition to come back. I don't think one is better than the other (BRA are Dasher). It is the shooter that makes the difference. I do not clam to be very good at this but I do like shooting and trying to get better.

 

[BartsBullets]

Shooting at 1000 yards with any caliber for group and score are is it score and group is not easy. There is a lot that can happen and does happen before the bullet reaches the target. I would think form any caliber that is tuned it would be the shooter. A small condition is hard to see from bench to 1000 yards. Its hard to hold proper hold off (Kentucky windage) for the change and hard to wait for the condition to come back. I don't think one is better than the other (BRA are Dasher). It is the shooter that makes the difference. I do not clam to be very good at this but I do like shooting and trying to get better.

There’s a lot that you said I agree with. Ultimately it comes down to the shooter and how much time and work they are willing to put in and how well they learn their cartridge.

However, Once in awhile an Indian comes up with a better bow and arrow. Suddenly the same Indians with the new bow and arrows are shooting better then before. Same Indians just a different Bow and Arrow. Matches and records are falling to the BRA.

I’ve shot and tested both! The 6BRA beats the Dasher in accuracy, tune-ability, easy of Fire-Forming, and agging capability. I know that’s difficult Dasher guys to believe. Especially guys with great Shooting Dashers.
But, Hey! If Dashers your way, who Am I to say? If you’ve figured it and it works for you stay with it!

But Give the 6BRA as much time as the Dasher and I believe you’ll see what I’m saying is true.

Bart

 

[tom]

I know I can pick out a couple dasher barrels off my rack and compete at the highest level. There is no doubt. At least for a match/weekend. But at the same time, I could pick ANY of my BRA barrels, and even Bart could shoot!


Tom

 

[arm017]

Arm017, What are you getting for velocity between the two barrels?

I just clocked velocities with my 6BRA this past Sunday. Barrel prior to shooting it on Sunday only had 47 rounds on it. With formed cases and 30.5 of H4895 and a Fed205m and bullets .010” off the lands...

Sierra tipped 107’s where going 2868 average with a ES of 19 and a SD of 7 and that was for a 10 shot group.

Same load with the new 110 Hornady ATIP and those went 2822 average with ES of 18 and SD of 6 for a 5 shot string. I only had 22 of these bullets to play with so I wasn’t wasting any.

My barrel is a 5R and a 1-7 twist and 26” finish length.

Interesting side note the 107’s where loaded in 7BR Remington brass that I necked down to 6mm and the 110’s where loaded in 6BR Lapua brass.

Thanks for posting Frank.
I am using the same reamer that I own on all barrels for the past year. Essentially a no turn neck with a 120 freebore based on the Alex Wheeler spec. Same smith, same lathe, same barrel length, same matching impact actions, same cleaning regimen, all barrels are broken in (at least 300 rounds), all barrels are 7.5 twist

My sample size thus far has been three krieger 4 groove .237 barrels 28" straight tapers
And one of your 5R .237 barrels 28" straight taper (Maybe you can help boost my sample size here!)
I am only going off of what I know based on what I had ordered. It would be interesting to see where these fall in relation to each other on the fourth decimal place.
(You are welcome to my worn kriegers if you needed)

The bartlein with a 105 (newer lots) hybrids are averaging at 2915 with 30.2 gr H4895/ F205M
Vs. the 4 groove kriegers average around 2930, 2935, 2925 between the three I have had with the same 30.2 gr H4895/ F205M
AVG DA in texas has been around 2000 FT
All remain single digit to low teen ES

Of note - I have found your 5R barrel (again sample size of one) to true with a slightly higher G7 vs. the 4 groove kriegers. (281 G7 vs. 279)
I chalked it up to potentially a bit less jacket disruption which also might be related to the slightly slower velocity.

 

[arm017]

How come no one is shooting this powder?????

Because the burn rate is too fast. His 87 VLDs are well suited for it, but it pressured out too quickly and was not accurate with heavier bullets.
That being said- I have been using it to fireform with 26 grains and 105 hpbt with a 10 k jam which has been relatively accurate, nothing special.
They publish a 3700 kj heat potential in comparison to around 4000 KJ with varget/ h4895. Meaning- the barrel does not heat as quickly.

However if given the choice between AR comp and Varget/RL15/ H4895- I'd go with the typical powders you see listed on this thread.

 

[arm017]

Maybe to help get the thread back on track in terms of load data:

I just opened my now 4th 8lb keg of H4895 and find speeds and accuracy to be very equivalent over these 4 different lots. I was concerned reading about lot uniformity issues for folks with H4895, but I have not found that to be an issue in my case in terms of velocity and accuracy. I speak from a PRS shooter standpoint, so perhaps there is more nuances I am blind to that the BR folks are seeing.

 

[urbanrifleman]

Because the burn rate is too fast. His 87 VLDs are well suited for it, but it pressured out too quickly and was not accurate with heavier bullets.
That being said- I have been using it to fireform with 26 grains and 105 hpbt with a 10 k jam which has been relatively accurate, nothing special.
They publish a 3700 kj heat potential in comparison to around 4000 KJ with varget/ h4895. Meaning- the barrel does not heat as quickly.

However if given the choice between AR comp and Varget/RL15/ H4895- I'd go with the typical powders you see listed on this thread.

If @Alliant Reloading could do it they should formulate a powder for the 6mmbr. Right between R16 and Ar-comp with the temp formulation should be about right

Reloader 6br!!!

 

[DirtySteve]

I shall start a Dasher thread... Please get back to load data for 6 BRA.

 

[urbanrifleman]

Taking my 104 freebore Alex Wheeler reamer Rock Creek to the pdogs next week and will fire form a whole bunch of brass hopefully. Will be working up a load for LT 32 and 70 TNTS and Varmegeddons for fireforming. The longer FB allows for more powder and speed than my ZERO freebore. Should be able to get 3500 FPS fireforming. Then hoping to get close to 3700 after.