6 BRDX and 6 Dasher

[CJ6]

What differences are there in these two cartridges ballistics. Gunsmith has the BRDX but no Dasher reamer. Should I wait for the Dasher reamer or is the BRDX good to go ? I need dies for either so that's a wash.

 

[Bottom Fodder]

Well you can buy Dasher brass if that matters and you can also say “me and my Dasher”

 

[DJSBRS]

BRDX brass is .050 longer than a BR with a 40º shoulder and a longer neck than a Dasher. A Dasher is .100 longer than a BR with a 40º shoulder and shorter neck. In theory, your smith can run a Lapua BRA reamer in .050 deep and be where your BRDX should be.

DJ

DJ's Brass Service

 

[JEFFPPC]

Well, saying me and my Dasher never had any appeal to me many years ago so I went with the BRX. It has been good to me from 100 to 1000. However, shortly after I got my first BRX done I learned about the BRDX. If I had known about the BRDX I would have went that route. So if the BRDX trips your trigger, go for it. The cartridges don't determine the winner. The amount of work and thought you put into it will determine how you do. Now number one thing, shoot no shots without flags, my best advice.

 

[CJ6]

Well, saying me and my Dasher never had any appeal to me many years ago so I went with the BRX. It has been good to me from 100 to 1000. However, shortly after I got my first BRX done I learned about the BRDX. If I had known about the BRDX I would have went that route. So if the BRDX trips your trigger, go for it. The cartridges don't determine the winner. The amount of work and thought you put into it will determine how you do. Now number one thing, shoot no shots without flags, my best advice.

I do have/use flags.

 

[mule]

What differences are there in these two cartridges ballistics. Gunsmith has the BRDX but no Dasher reamer. Should I wait for the Dasher reamer or is the BRDX good to go ? I need dies for either so that's a wash.

I have a 6 BRDX no fire forming needed 6 dasher alpha brass I just ran into the fulling sizer good to go

And whidden makes the dies

 

[mule]

BRDX brass is .050 longer than a BR with a 40º shoulder and a longer neck than a Dasher. A Dasher is .100 longer than a BR with a 40º shoulder and shorter neck. In theory, your smith can run a Lapua BRA reamer in .050 deep and be where your BRDX should be.

DJ

DJ's Brass Service

I don't think you can run the BRA reamer in further as the neck would be way too long and you would have a very bad carbon ring

 

[DJSBRS]

I don't think you can run the BRA reamer in further as the neck would be way too long and you would have a very bad carbon ring

It can and has been done. Depending on the reamer specs and specific results desired, there is some difference but not enough to worry about if you know how to keep the fouling from turning into a carbon ring. Remember, you start a carbon ring with the first shot that becomes a fouling ring and the more you shoot without cleaning properly determines the severity of neck and throat carbon rings. Your cleaning methodology will determine when you have a carbon rings ( neck and throat ) not fouling rings that have issues of concern.
I have made brass for all of these chambers and it is what the customer wants is what matters as long as they understand the difference.
Check the reamer prints for BRA, BRDX , Lapua, Dasher and Norma Long Dasher.

My .02¢ worth.

DJ

 

[mule]

It can and has been done. Depending on the reamer specs and specific results desired, there is some difference but not enough to worry about if you know how to keep the fouling from turning into a carbon ring. Remember, you start a carbon ring with the first shot that becomes a fouling ring and the more you shoot without cleaning properly determines the severity of neck and throat carbon rings. Your cleaning methodology will determine when you have a carbon rings ( neck and throat ) not fouling rings that have issues of concern.
I have made brass for all of these chambers and it is what the customer wants is what matters as long as they understand the difference.
Check the reamer prints for BRA, BRDX , Lapua, Dasher and Norma Long Dasher.

My .02¢ worth.

DJ

That is a very good point sir but to my understanding there is roughly .050-.060 difference from the reamer prints BRA versus the BRDX so that is the only reason why I even brought it up as I do shoot both of them

So that's why I don't think you could just get away with running the reamer a little deeper as you would have a lot of extra neck in there for build up

 

[DJSBRS]

That is a very good point sir but to my understanding there is roughly .050-.060 difference from the reamer prints BRA versus the BRDX so that is the only reason why I even brought it up as I do shoot both of them

So that's why I don't think you could just get away with running the reamer a little deeper as you would have a lot of extra neck in there for build up

Now you talking a different thing. The difference in the necks length only is not .050 to .060 between a BRA and a BRDX.
My JGS reamer print for my OAL 6 BRA is 1.560 with a neck length of .328
My PTG reamer print shows my OAL 6 BRDX is 1.570 with a neck length of .293
The difference between the two is only .035 Lapua 6 BR brass new is approximately 1.555

Again, 6 BRA brass is blown forward at the shoulder .017 and the BRDX is blown forward .050 to reach chamber wall length.

So, I could and have ran a 6 BRA reamer in deep to make a BRDX chamber.

See attached pictures of the two side by side. Not much difference in neck length. The point is from your stand point is never let the carbon build up the first place. I clean my neck and throat spotless after every 100 fired rounds. I clean the bore every 25 rounds or so.

DJ

 

[Yote Hunter]

BRDX is more optimal powder capacity than the BRX and has a longer neck. Dies aren’t a big deal either. A 6 Dasher seater works fine and Whidden makes a full length sizer. The BRDX was founded by “my” local gunsmith and was way before its time. It’s a good’an.

 

[mule]

Now you talking a different thing. The difference in the necks length only is not .050 to .060 between a BRA and a BRDX.
My JGS reamer print for my OAL 6 BRA is 1.560 with a neck length of .328
My PTG reamer print shows my OAL 6 BRDX is 1.570 with a neck length of .293
The difference between the two is only .035 Lapua 6 BR brass new is approximately 1.555

Again, 6 BRA brass is blown forward at the shoulder .017 and the BRDX is blown forward .050 to reach chamber wall length.

So, I could and have ran a 6 BRA reamer in deep to make a BRDX chamber.

See attached pictures of the two side by side. Not much difference in neck length. The point is from your stand point is never let the carbon build up the first place. I clean my neck and throat spotless after every 100 fired rounds. I clean the bore every 25 rounds or so.

DJ
View attachment 1451906

You are correct on the measurements that you are taking but those are some very old prints The prince that I am currently looking at are all new stuff

If you blow these shoulder Forward .050 there would be a approximately .050 off of the neck

Which goes back to my original saying that you would have a lot of fouling or carbon buildup with the brass being short Yes you can thoroughly clean it with a low round count but if you're shooting like PRS or f class those are higher round counts which means you would have build up

Other than all that the 6B RDX is a excellent case you can still get dies I wouldn't turn back by getting one
Especially since you can size down the 6 dasher brass to make it super easy

 

[DJSBRS]

You are correct on the measurements that you are taking but those are some very old prints The prince that I am currently looking at are all new stuff

If you blow these shoulder Forward .050 there would be a approximately .050 off of the neck

Which goes back to my original saying that you would have a lot of fouling or carbon buildup with the brass being short Yes you can thoroughly clean it with a low round count but if you're shooting like PRS or f class those are higher round counts which means you would have build up

Other than all that the 6B RDX is a excellent case you can still get dies I wouldn't turn back by getting one
Especially since you can size down the 6 dasher brass to make it super easy

Help me understand how a 6 BRA reamer with a OAL of 1.560 pushed in another .050 to create a 6 BRDX chamber will draw back the neck .050 ( as you state above) and have a remaining 1.510 remaining OAL as a BRDX? There must be some body stretch from my perspective.

DJ

 

[mule]

Help me understand how a 6 BRA reamer with a OAL of 1.560 pushed in another .050 to create a 6 BRDX chamber will draw back the neck .050 ( as you state above) and have a remaining 1.510 remaining OAL as a BRDX? There must be some body stretch from my perspective.

DJ

No it be longer That's why I said it would have carbon ring in it

So instead of your original math of 1.560 it would be OAL of 1.610?

The neck isn't getting shorter on the 6 BRA reamer it's still the same length as original you just made it longer if you go another .050

 

[Liven The Dream]

2.5 Cents .
Have 2 Norma Dashers. Norma makes Brass .
Reamer available.

I find them an easy Tune for Loads .
I have shot some Big Scores at 600 and 1000 yards on a F/Class Target .
It makes no difference which one if you load with ease.
Point no rocket fuel loads .
Small Hole Big Burn = Short Barrel Life
Shot Well Be Happy

 

[DJSBRS]

No it be longer That's why I said it would have carbon ring in it

So instead of your original math of 1.560 it would be OAL of 1.610?

The neck isn't getting shorter on the 6 BRA reamer it's still the same length as original you just made it longer if you go another .050

Thank you for your perspective.

DJ