View Full Version : Dasher Case Length Fire Formed

05-20-2010, 01:31 PM
Just trying to get an idea what 6mm Dasher cases measure in OAL when you are done fire forming them.

The 6BR Lapua brass I have measures right around 1.555" and I know when you fire form and blow the case out to a Dasher, it does pull back the length some. What I am trying to figure out is about what you wind up with in the length of the fire formed Dasher cases.

Robert Whitley

Greg Fowl
05-20-2010, 05:32 PM
Robert-This my data after doing. 6 BR=1.560. After forming mine are 1.535. Hope this is helpful. V/R Greg

05-20-2010, 06:42 PM

Definitely helpful - a little shorter than I thought it might be but I had no idea (only an educated guess) and that's why I asked - Thanks!

I would be very interested to see what others get as well.


05-21-2010, 07:38 PM
Any other takers on this thread? Info from others would be greatly appreciated as well.


05-21-2010, 08:24 PM
I trim mine back to 1.545 after no less than two firings. Lee

Noth Fork
05-22-2010, 12:02 PM
Mine are also trim to 1545.