6BR-AI-DX Got my Attention Today

[Gabe22BR]

What velocity is that and also what is that case shortened up to?

2898 fps

1.524" formed

 

[22DASHER]

Right on. Keep us up to date on the 600 yard news..

 

[johara1]

My 6BR imp. blows out to 1.550 - 1.553 almost every time, you may get 1.548 once or twice in a hundred. Velocity seems good with 24" barrel around 2900 with RL-15, will try 26" next. 100 yd groups are best I've ever seen as small as .027 and .050 with the 105's ES is as low as 2. it's a keeper........ jim

 

[Tim Singleton]

Tim
Running the Brdx reamer in short what is the diameter of the fired cases at the .200 mark?
Does the shortened sizing die sizing appear to size enough at the base?

 

[tclaunch]

Yes, Harrells was nice enough to send me 2 Dasher dies to size check, this was all from Mr. Stan Taylors advise. They sent a #2 and #3 and allowed me to return the one I didn`t use. Normally you send in fired cases, but thought I could figure that out. My .200" diameter on the BRDX is .4715" so it worked out the #2 was working well and is what I suggested Gabe get and he`s in good shape sizing as well.

 

[Tim Singleton]

I am going to give this a try. I have a BR reamer and a Brdx reamer. But didn't really see the need to run the BR reamer in just for the neck length
I won't be shooting any light Bullets.

 

[cdngary]

Yes, Harrells was nice enough to send me 2 Dasher dies to size check, this was all from Mr. Stan Taylors advise. They sent a #2 and #3 and allowed me to return the one I didn`t use. My .200" diameter on the BRDX is .4715" so it worked out the #2 was working well and is what I suggested Gabe get and he`s in good shape sizing as well.

How much difference is there between the#2 and#3 die at the .200 line? How much did you have to shorten the dasher die to fit your case? Thanks

 

[tclaunch]

I shortened my first one for me personal to much at .145" but thank goodness it still works great. The one for Gabe I paid better attention to and do not remember the exact amount, maybe like .080" but how you find your number for the cut, is to measure the difference between the 2 headspace gauges inserted in the Harrells die. The difference is how much you take off.

I`d be guessing on the inside dimensions on the die, but if i had to guess it would be .0005"

Same die can be used for the 22 Shawty as well.....!

 

[cdngary]

I shortened my first one for me personal to much at .145" but thank goodness it still works great. The one for Gabe I paid better attention to and do not remember the exact amount, maybe like .080" but how you find your number for the cut, is to measure the difference between the 2 headspace gauges inserted in the Harrells die. The difference is how much you take off.

I`d be guessing on the inside dimensions on the die, but if i had to guess it would be .0005"

Same die can be used for the 22 Shawty as well.....!

I have a Dasher go guage. Would a fire formed AI case work as the comparision? Thanks

 

[tclaunch]

I have a Dasher go guage. Would a fire formed AI case work as the comparision? Thanks

If it were sized it should work, or a new 6BR case.

 

[Tim Singleton]

Most Dashers are around 1.198 or so to shoulder
Looks like a BR ai would be around 1.118 or so
Difference of .080

 

[Cool Tool]

I am going to give this a try. I have a BR reamer and a Brdx reamer. But didn't really see the need to run the BR reamer in just for the neck length
I won't be shooting any light Bullets.

WEll if you use the brdx in short you will be able to achieve what Tim did don't run 6mmbr in long you wont be able to get the shoulder were you want that short 40 degree will do what you need Tim scratched his head on this one lol.

 

[tclaunch]

WEll if you use the brdx in short you will be able to achieve what Tim did don't run 6mmbr in long you wont be able to get the shoulder were you want that short 40 degree will do what you need Tim scratched his head on this one lol.

I had never used Harrells dies before, it was a really pleasant suprise.

 

[Phil]

I had never used Harrells dies before, it was a really pleasant suprise.

Nothing but good things to say about their dies......

 

[johara1]

Tim
Running the Brdx reamer in short what is the diameter of the fired cases at the .200 mark?
Does the shortened sizing die sizing appear to size enough at the base?

The reamer i used was a reground Dasher that was .4708 at the .200 line and set the free bore at .120. All i did was shorten the #3 Harrell's Dasher die enough to set the shoulder back. Easy to do all the Dasher stuff worked in the change over....jim

 

[Tim Singleton]

The reamer i used was a reground Dasher that was .4708 at the .200 line and set the free bore at .120. All i did was shorten the #3 Harrell's Dasher die enough to set the shoulder back. Easy to do all the Dasher stuff worked in the change over....jim

Good to hear. I have a #3 and a Wilson Dasher seater
I should be set. Reamer should be here in a couple days

 

[cdngary]

Good to hear. I have a #3 and a Wilson Dasher seater
I should be set. Reamer should be here in a couple days

If you chamber with a BRDX reamer and then use a dasher sizer to f/l size are'nt you loosing the small advantage of the BRDX case?

 

[tclaunch]

I think those are his collection of unmodified parts for the project. The FL die will be shortened accordingly to bump the shoulder. The BRDX reamer is used, but headspace is achieved with 6BR headspace gauge.

 

[Eric Leonard]

whats the freebore on the 6BRAI reamer Tim,,I would almost do a 12 twist to shoot the 80s to shoot unlimited UBR with,,

 

[tclaunch]

The new reamer is a zero freebore for slower twist/light bullets.
.138" on the BRDX
.140" on the Norma Dasher.