6x47L vs 6BRDX/BRX/Dasher

[ASbobcat]

Once again, most helpful information. Also want to look into BRDX and also input on an Ackley shoulder on 6x47 to reduce or minimize the brass flow you experienced.
D

I'm sure a Ackley shoulder would be beneficial, if you are willing to either buy custom dies or include an extra sizing step.

 

[dbduff]

I'm sure a Ackley shoulder would be beneficial, if you are willing to either buy custom dies or include an extra sizing step.

Following up on 6 Brdx quest, PTG has finish reamer in stock, 10 of them actually. Will be a 2 month wait on go no go gauges. One might think that if reamer and gauges are essential for product production you would have them all or none at all.
D

 

[Phil]

I'm sure a Ackley shoulder would be beneficial, if you are willing to either buy custom dies or include an extra sizing step.

Almost everything i have has an Ackley should on it, so i just figure that it`s a cost of doing business.

Also, all of my dies are made to fit my brass, i use chamber reamers to cut seating dies and have sizing dies made from reamer prints as well as sending in fired brass....

Short of that, i do have some off the shelf dies to assist in the initial forming of some of my cases, there again just the cost of doing business in my mind.....Even though it is an additional step, as well as additional cost.

Phil.

 

[Tim Singleton]

I FL resize with Redding bushing dies. I always try to seat with bearing surface above the donut, but the brass flow bit me before I figured out why I'd blown the extractor. It is important to measure the neck OD at the point where your seating depth places the base of the bearing surface.

Any time you resize brass that is significantly thicker in the shoulder than the neck you're eventually going to get a donut. With bushing dies it will be on the outside and with non-bushing it will be on the inside.

Sounds like the problem you have is a sizing die chamber mis match
The brass moves when sized not when fired. The die is setup to size to much
Or is just an all around bad match to your chamber

 

[Tim Singleton]

Now I get what you're saying. Brass continues to flow into neck of case with repeated firings, consequently,to avoid too much grip by neck on bullet and subsequent extractor issues the user needs to turn necks after x number of firings. I assume as you approached this bullet grip issue the chambering got harder with each subsequent firing. Have I got the jist of your concern?
D

I would have to disagree here also
The brass doesn't move on firing. The brass lengthens with the sizing operation. If you sizing die doesn't match your chamber.
A good match between die and a match chamber is hard to find with any mass produced sizing die

 

[ASbobcat]

Following up on 6 Brdx quest, PTG has finish reamer in stock, 10 of them actually. Will be a 2 month wait on go no go gauges. One might think that if reamer and gauges are essential for product production you would have them all or none at all.
D

That's good to hear. I agree on the production mismatch, but the fact that they are cranking them out in numbers tells me we're not the only ones interested.

 

[ASbobcat]

Sounds like the problem you have is a sizing die chamber mis match
The brass moves when sized not when fired. The die is setup to size to much
Or is just an all around bad match to your chamber

Actually, neither is true. The chamber was cut with my SAAMI spec reamer and is a perfect match to my Redding sizer. I bump the shoulder .002.

 

[BoydAllen]

Brass does not "flow" under the pressure of firing. What happens is that when the case is sized, the reduction of body diameter and bumping of the shoulder force brass up into the case neck, which is why you have to trim. That being said, if you only bump back from the longest datum to head dimension that is attainable in that chamber, and limit that to a max. of .001, most of the case growth will come from reduction in body diameter. Planning can reduce this to a minimum, either by using a custom die, if you already have a reamer, or by using sized brass from your die as a reference for coming up with the body dimensions for your chamber reamer. Beyond this, if you are turning necks, you can turn at 6.5 before necking down which will put some of the turned portion into the very top of the shoulder, giving you more firings before a doughnut forms.

 

[Tim Singleton]

Actually, neither is true. The chamber was cut with my SAAMI spec reamer and is a perfect match to my Redding sizer. I bump the shoulder .002.

From the problems you have described in this thread.
The die you are using or perhaps the way it is setup is far from a perfect match

 

[Tim Singleton]

Don't take offense to my posts, please
I just hate for you to move on to another cartridge to perhaps have a similar issue arise

My first foray into loading for a custom chambered rifle was an exercise in frustration
I had a die that didn't match had all the issues you describe to a T
All the way to eventual case head separation from over sizing
So let some of us who have already learned the hard way help
That's the purpose of this board

 

[myownman]

This thread has discouraged me a little on the 6X47L. I've been running with the 6.5X47L for a while now and wanted to change it up a bit. I hope the round isn't to hard to tune. I've already ordered all the dies and was going to order the reamer Monday.

 

[ASbobcat]

Don't take offense to my posts, please
I just hate for you to move on to another cartridge to perhaps have a similar issue arise

My first foray into loading for a custom chambered rifle was an exercise in frustration
I had a die that didn't match had all the issues you describe to a T
All the way to eventual case head separation from over sizing
So let some of us who have already learned the hard way help
That's the purpose of this board

No offense taken. I was just offering my 40+years of reloading experience, often "the hard way", as you suggested.

From some of the other recent replies to this post, I can see that it has outlived it's usefulness.

Best of luck

 

[tonyb]

Almost everything i have has an Ackley should on it, so i just figure that it`s a cost of doing business.

Also, all of my dies are made to fit my brass, i use chamber reamers to cut seating dies and have sizing dies made from reamer prints as well as sending in fired brass....

Short of that, i do have some off the shelf dies to assist in the initial forming of some of my cases, there again just the cost of doing business in my mind.....Even though it is an additional step, as well as additional cost.

Phil.

Hey Phil, who is making your sizing dies? what configuration have you found that works best as far as ultimate consistency and load results? (I am going to take a guess and say Whidden)

Thanks!

Tony.

 

[Phil]

Tony,

I have Whidden, Newlon Precision, Neil Jones, Harrells Precision, and Warner Tool dies.................

As well as some Redding and even a Forester die.....


Phil.

 

[Grimstod]

This thread has discouraged me a little on the 6X47L. I've been running with the 6.5X47L for a while now and wanted to change it up a bit. I hope the round isn't to hard to tune. I've already ordered all the dies and was going to order the reamer Monday.

Give the Long Dasher a look. It solves many of the problelms that are experienced with 6x47. The Long Dasher (the parent is the 6x47). Also you need to use a little slower of a powder. Vargety is way to fast. You won't be able to get good results with it. Use the heaviest 6mm bullies and something with a burn rate similar to R17