#1
|
|||
|
|||
20 Dasher caseforming pics.??????
Does anybody have any pictures of thier brass while it`s going through the case forming process??????
I`d like to see the steps,as they happen,and know what dies you are using to get them there.... Phil. |
#2
|
|||
|
|||
I'm interested too.....
|
#3
|
|||
|
|||
20DASHER case forming
20DASHER is formed from the parent 6mmBR case.
Using a bushing die, the neck is reduced to 20 Calibre from 6mm and then fireformed to produce the 40degree shoulder. |
#4
|
|||
|
|||
Does it go from 6mm to 20 cal. or are there steps in between? I could see a 22 br die coming in pretty handy.
|
#5
|
|||
|
|||
Does the dasher...
need to be annealed? If so...At which point do you do this? What is the case life like, and barrel life?
__________________
Pray for Obama. Psalms 109:8 American King James Version Let his days be few; and let another take his office |
#6
|
|||
|
|||
okay...more information
oaky...I'll layout procedure step by step.
Using the 6mmBR parent calibre brass which has a .267" neck Run brass through a 22BR Form Trim die (Redding #83316) using a shell holder extentsion for the RCBS press. The result is .254" neck Next, run brass through 22BR Full length die, remove the guts from the die (Redding #91316) The result is .243" neck Run through a 6mmBR Type-S Neck die (Redding #71317) Replace the lareg decapping rod with a 17MK 1V decapping rod assembly w/.204" expander ball Use the .235" bushing ...Result is .235" neck Next, run through the same Type-S die but with a .231" bushing Result is .231" neck Now, I install the primer, and proceded to fireform this case. I've used the cream of wheat method which includes 11.0 gr. 700X powder. Next, I'll resize the brass in my custom Hornady Type S bushing die with a .231" bushing. My trim length is 1.5560" I seat the bullets with s custom order Hornday 20DASHER competition seater. |
#7
|
|||
|
|||
Thanks Al,
Thats what i was looking for. Phil. |
#8
|
|||
|
|||
re:fireforming
Could this round be fireformed by loading, and firing with a bullet, say hunting? Or is this not accurate enough until fire formed?
I have a lot of questions, I know. I recently got 3 barrels I ordered, and they are burning my safe down. I am thinking that i want to do one in either a ppc, or beggs, or BR, with a 9 twist. Thanks in advance. larry Edit: I forgot to mention dasher as one of my choices.
__________________
Pray for Obama. Psalms 109:8 American King James Version Let his days be few; and let another take his office Last edited by larryinIA; 12-10-2009 at 01:53 AM. |
#9
|
|||
|
|||
glad to provide the information
Phil > glad to help...
Larry > yes, the fireforming process can be accomplished by loading the bullet of your choice. The 1:9 is quickly becoming the most popular twist for 20Cal's |
#10
|
|||
|
|||
Al,
Shouldn`t there be a false shoulder left for fire forming this case??????? |
Thread Tools | |
Display Modes | |
|
|