Loading for 6 Dasher

[Simon C]

Hi Guys,

I'm currently having a rifle rebarreled to this caliber.....to dabble in the dark side!

Just wondering whether those with 6BR or dasher experience can offer any recommendations for powder and primer combos as a start. I have lapua brass to fireform and 107 SMK's.

Thanks in advance!

[agro]

Get in contact with wild bill at bendigo.

Cheers

[bobeager]

I use 30.0 of 2208 with a 105 Lapua Scenar (jammed hard into lands) and a CCI BR4 for fireforming. Match load is 33.3 Gr 2208, CCI BR4 Primer with 105 Lapua Scenars loaded 10 thou off the lands.

Remember, back off and work up. These loads are specific to my rig.

Have fun

[Simon C]

Cheers Bob.....did u size the brass at all prior to loading for fireforming? I'm interested in wat people do to the brass prior to fireformnig wildcats u see.

Ive heard about this false shoulder business (6.5mm) to prevent over stretching on the forming shots. I spose this makes the neck seal the throat section of the chamber.

[VickiMcc]

Best method is to expand the neck up to 25 cal or 6.5 depending on what expander you have. Make sure you use a lubricant when expanding. Then set up your Dasher F/L sizing die as per normal and then size the case as you normally would, once again using a sizing lube.
This produces a false shoulder around 1/2 way down the neck. De burr necks of cases inside and out and load somewhere between 30 and 31 grains of 2208 with the projectile hard into lands, then all you have to do is pull the trigger. You will notice that the shoulder/body junction is not "sharp", it will still be slightly rounded. Dont worry this will dissappear on the next firing.
Once fireformed the 1st time you can then load between 32.5 and 33 grains of 2208 with a 107 sierra hard into lands, sparked off with a Rem 71/2 or cci BR4 primer.

Dont be alarmed if you get 1 or 2 cases that split in the neck/shoulder area. It happens unforunately. I have had 3 or 4 in the 200 or so cases i have formed.




Hope this helps

Paul
If all else fails read this

http://www.6mmbr.com/6improvedform.html

[Simon C]

Thanks Paul...in order to get that false shoulder, u would need to use a bushing die wouldnt u? I have forster FL benchrest die which does not use a bushing. I didnt want to pay the $200+ for the redding die.

[VickiMcc]

shouldnt be a problem as long as it is suited for the cartridge

Paul

[bobeager]

Simon, I did not use the false shoulder method as I simply did not have the Dies ( I have a Wilson straight line Neck & Seater and a Redding Body Die).

I jammed them into the lands & fired. Lost only 1 case.

Regards

[Ackley Improved]

Hi

In mine I am using 33.3g of RL15, 107MK's, CCI BR4 primers seated just into the lands.

I used the 6.5 mandrel for fireforming, but I had problems with the neck not being straight, so when I went turn the necks it was yawing all over the place. Next time I will try a 25cal mandrel, if the same occurs I will just jam and shoot!!

It shoots better than I will ever be able too!

Great little caliber.

CHeers
AI

[Simon C]

Thanks AI,

I was gonna look at neck turning after the fireform and once Ive run em over the 6mm mandrel..that should iron out any funny business.

Did u neck turn prior to fireforming them? the mandrel may have caused some issues to the concentricity between neck and body....I guess a bucket load of impreial sizing wax will be needed!

[Ackley Improved]

I have to turn the necks before I fire as mine is a 0.265 neck.

What I did do, and was a pain in the arse, is off the chamber drawing, I turned the case to the length of the shoulder from the drawing.

Then I necked up to 6.5 and made a false shoulder.

Fireformed the cases, and then ran them though the turner again.

It was not the best way to do it, but all the cases I have turned out very well!!

I think 6.5 mandrel maybe to big a step... thats why next time I'll try the 25cal, and if the same just jam and shoot.

I contacted a fellow who is doing very well in the US shooting the Dasher, and he advised me that him and another few Dasher shooters were just jamming and shooting!

Also, RL15 is not as temperature stable as 2208, but it does give you a little more velocity!!

Cheers
AI

[VickiMcc]

Thats why i went with a minimum no turn neck and use around 33gns of 2208. Reloader powders to temp sensitive as you say. Cant beat 2208. Velocity isnt everything


Paul

[Simon C]

These wildcats are a bit of a PITA to get up and running

I gues it takes your interest to the next level in terms of reloading skills (which necessitates the purchase of more tools ). That being said, I love it.

Thanks for the info fellas

[VickiMcc]

When you have all the prep work done and are out shooting all else will be forgotten. They just shoot.


Paul

[Ackley Improved]

PaulMcc

With the Dasher case we are trying to achieve extra velocity with the BR case, but kepping its accuracy. Velocity isnt everything I know, but when a standard case can run into the 2900fps mark, what was the point of the using the Dasher case if you are only going to load into the mid to high 2900fps. Might as well have used the standard 6mmBR.

Now, thats why I am using 33.3g of RL15, getting all the performance out of the Dasher case and make it worth while over the standard case.

I have not put the rifle over the chrony, but would expect to be into the 3050fps to 3100fps with the 107MK's!

I found that when working loads, I had about a grain where the accuracy was the same throughout. That was 32.7 to about 33.7, but settled on 33.3 of RL15.

RL15 burns fairly clean once it gets up in the pressure as well!!

I have put 16 shots into mid 0.3's at 100m (wasting left over ammo after comp), and the rifle is a very good shooter at 500m!

This is my thoughts anyway! Here is a picture of the little Dasher!!



Cheers
AI