260 ACK & 284 Shehane Hydro-forming dies

[DJSBRS]

If possible can you give me the Raw Shoulder measurement your Die delivers?

.459

DJ

 

[BOB LEE SWAGGER]

DJ, are you set up for Alpha or Peterson brass? I have a 6.5X55 40 shoulder that shoots very well but the internal capacity consistency of my (I no longer believe the hype!) RWS brass is all over the place. I would love some 260AI ready to go!

 

[Killick]

Hey guys and gals, I have been getting enough request to hydro-form 260 ACK and 284 Shehane. The dies will be custom made and I require very tight inside neck plunger tolerances to achieve customer satisfied brass results to load and shoot a full load of your choice of powders.

These dies are proprietary dimension design and critical to inside neck clearance of less than .0005 in order to form the proper case in a custom chamber. I reamed a 260 ACK custom chamber cylinder today to get things started.

In order to obtain consistent brass case volume, it must be formed the same way every time ( one impact with over 50,000 PSI ).
Back to my question to those of you that are shooting these calibers. What brass do you prefer to use and what brass are you seeing the majority of the shooters use? What is the consistent neck thickness from a new lot of 284 brass currently averaging?

I am currently working with Lapua 260 brass (for 260 ACK) to work up the required impact plunger piston.
I am not sure how many shooters are sizing up from 6.5 284 Lapua or those that are using 284 Norma.

Please share your thoughts on the brass that will be or currently used.

I have been Hydro-forming for over 6 years and thank each of you that have used my services currently or in the past. You guys require consisted brass and that is the only thing I will provide.

Please advise accordingly and thank you in advance for your valued opinion.

DJ

DJ's Brass Service
djsbrass.com
205-461-4680

Are you making the .284 Shehane hydraulic forming dies? I would be very interested. I use Lapua .284 Win brass. I also use Lapua 6.5-.284 Win brass. I would mandrel the necks to .281/.282 before forming.