BRX or Dasher?

[Waskawood]

I am in the process of getting my feet wet with a 6BR so my mind wonders to the next build. I have read about the BRX and Dasher. The velocity seems to be about the same. The BRX can use my existing dies and appears to be much easier to fire form. Why a Dasher? Is it more accurate? Will the shoulder angle allow me more relaods with brass? Any help appreciated. Thanks................

 

[cmillard]

might as well go with the BRX since you will have dies. but, why not just stay with the 6BR?

 

[Waskawood]

Cole, you bring up a good point. Why fix it if it ain't broke? I do not know that answer either. I will through that question out there also.

 

[TheBlueEyedBear]

The simple answer is: If you want to shoot 1K yds with a 6mm the DASHER is much better suited than the 6BR. There are many records out there set by the DASHER that will back this up.

 

[gunsandgunsmithing]

The biggest difference between a Dasher and a BRX is the cost of the Dasher dies. I simply don't see a significant advantage that the Dasher has over the BRX. IMO, if I already had BR dies, I would most definitely go with the BRX. They are both fine cartridges that can and do win matches. The rest is up to the driver.---Mike Ezell

 

[rustycj8]

Waska, I went through the same predicament as you a couple of months ago. While I really think the standard 6mm BR would have been fine for me I just seem to have to do things the hard way and chose the Dasher. I have no regrets whatsoever but fireforming is somewhat of a chore (I did COW) and dies were a little difficult to get for awhile. I will say these 6mm BR's are indeed shooters even with me behind the wheel. Good luck with whatever you choose and have fun. Dave

 

[Bob3700]

To begin with a BRX all you need is the dies you already own and a 308 body die (cheap enough).

The Dasher will require an expensive set of custom dies.

Both will give the same results for velocity and accuracy. As the Dasher holds records, so does the BRX.

Pay your money and take you pic.

Bob

 

[Ben]

Is the shorter neck length of the BRX or Dasher a concern when compared to the standard BR? Is keeping the bullet out of the neck junction a problem.

Thanks.

 

[tclaunch]

Absolutely. 104" freebore is short if using Berger 108, 105 Target or 107 Sierra. The .104 is all the way down to neck/shoulder with 105 VLD`s on my Dasher. The BRX neck is shorter yet and needs much consideration. I`d never have another Dasher/BRX throated .104". Others may like the short throat. I do not.

 

[camac]

Each has their advantages and disadvantages- the short neck is the disadvantage (fall short of calling it a problem) for the BRX. It leaves little room to play with for seating depth especially if you like to leave a little neck unsized for alignment in seating dies/chambers etc (similarly for donut). The Dasher is great but dies are expensive as said.
What about the 6-6.5x47 Lapua. Can you still use BR seating dies, bump dies and possibly combine FL die with 308 body die too (unsure??). Not everyone has had great accuracy out of it but some certainly have.....

 

[camac]

Following on - a few ridfles down my project list (which makes it a possible?) is a variant of the 6mmBRX - with longer neck. I have the reamer drawn up on computer and I think I could actually get away with 6mmBR reamer sent slightly deeper. Brass would have to be formed from 6.5*47 Lapua and a bit tedious but doable.

Possibly use same reamer, dies etc etc only downside is forming the brass and would have to make a couple of step down dies.
Call it the 6mmBRXLN (Long neck).
or 6BRL (Long)

I love the 6BR don't get me wrong but the thought of having same accuracy with just a bit more legs is exciting and the reason to fix it when it ain't broke is to have one rifle to do it all - 300 - 1000yds. What is the saying - "beware the man with just one gun"

 

[Bob3700]

A couple of thoughts on the BRX with a .104 freebore. My reamer has that dimension and I shoot 105 B and 107 SMKs. The SMKs are the most accurate combination in my gun.

I would not fret about a 107 with the .104 freebore mine is shooting very well at 600 and 1K yds.

One thing to consider with freebore. That initial .104" dimension is only there for a short time. The throat wears in quickly and the freebore goes to .110 and the rifle really starts shooting.

I would rather start with my FB a bit short and shoot into the ideal dimension. That way I have many rounds of bbl life at the best FB dimension. If you start at what you consider ideal FB, then you are shooting away from your best dimension.

Just one person's take on the FB issue with the BRX.

Bob

 

[canderson]

I have a Dasher and did not find that the dies were much more than a standard die set. It is a mix (redding type S fl sizer and a forster micrometer seater). I think that I have about $180 in the set. Is that alot more expensive than a type S 6br die set? The dasher was a little tricky to get the neck turner set up but, after that, it was easy. The fireforming loads shoot very very accurate. They are only about 120 fps slower than the full power loads. I shot mine during competitions and placed really well.

 

[camac]

A couple of thoughts on the BRX with a .104 freebore. My reamer has that dimension and I shoot 105 B and 107 SMKs. The SMKs are the most accurate combination in my gun.

I would not fret about a 107 with the .104 freebore mine is shooting very well at 600 and 1K yds.

One thing to consider with freebore. That initial .104" dimension is only there for a short time. The throat wears in quickly and the freebore goes to .110 and the rifle really starts shooting.

I would rather start with my FB a bit short and shoot into the ideal dimension. That way I have many rounds of bbl life at the best FB dimension. If you start at what you consider ideal FB, then you are shooting away from your best dimension.

Just one person's take on the FB issue with the BRX.

Bob

Bob - throat wear and a short neck would be one of the big points against the short neck for me. You have to start with a short freebore as you do or you have nowhere to go. A longer neck gives you more room to expand with throat wear and a bigger choice of projectiles.., you can also leave some neck unsized to line up shell in centre of seating die collet/chamber etc. All probably a bit irrelevant to some but to me are important.

canderson - Over here I paid $500AUS for my first 6mmBR redding competition die set. I have 2 reamers as well so if I can use them it would be nearly $800 AUS saving on going Dasher with the same dies - no doubt I can save on that by going a cheaper die set (nothing against the Forster and redding type S - I have and love some of them too but -"apples with apples".). I also have spent some time accurising my 6BR die by making my own collet to suit my chamber reamer. I don't fancy having to do it again - it took some patience and precision and a few attempts.

 

[canderson]

Thanks. I figured that most people were using a custom dies instead of the off the shelf dies that I am using. That explains why some dasher dies are expensive. Thanks.

 

[rcw3]

I don't know what the big fuss is over Dasher dies, I just received some new 6mm Dasher Redding Type S FL Bushing Sizing Dies and I have some for sale. The sizing die is $89.95 (shipping included). Pay by PayPal or check and include your address and you can get one shipped out to you by Priority Mail.

For a seating die you can use a 6BR seater up about .125" from its normal position (i.e. buy a Redding .125" die spacer and you can switch back and forth between a 6BR and a 6mm Dasher and a 6BRX just by putting the spacer under the lock ring).

Robert Whitley
rcw3@erols.com

 

[alf]

For a seating die you can use a 6BR seater up about .125" from its normal position (i.e. buy a Redding .125" die spacer and you can switch back and forth between a 6BR and a 6mm Dasher and a 6BRX just by putting the spacer under the lock ring).

Or use a Wilson inline bullet seater.

 

[johara1]

I can't understand the cost for Dasher dies.Forster FL die is around 37.00 and get them to hone the neck to what you want for neck tension is 14.00 and a wilson seater die is about 50-60 dollars.
They work well in my dasher today, .591 at 500 yds. no special dies......jim

 

[camac]

Great shooting Jim.
We pay a lot more for everything over here in Aus. Seems everything is at least double the price.

 

[johara1]

Robert, I just received the Dasher die and it's a great die, also your service was second to none.....thanks ......jim