map55b
04-02-2017, 12:11 AM
Here is what I did. I used a chamber reamer to make five dies that head spaced (more or less) on a case in a shell holder. The raw material for the dies was a piece of 7/8-14 threaded rod (3' for ~$28), this saved a bunch of time since I didn't have to thread the stock. I then drilled the chambered dies out in roughly .020" steps. This gave me a set of forming dies that basically keeps the should where it should be and cost near nothing to make (except time, but I don't charge myself much).
I then performed the following steps:
Cut 223 case at the shoulder
Trim all case to same length, squaring the mouth and then deburr
Run case into each of the five forming dies
Runt he case into a small base 223 to shrink the body (probably not needed)
Run the case into the 17 FireBall
Inside neck ream (I made a guide that fits into the depcaper that holder a .168 chucking reamer
As long as the I start with a good square case mouth I have zero loss. I haven't fired these, but I have popped a few primers, I confident the shoulder will blow out. What do you think?
http://i1172.photobucket.com/albums/r566/map55b1/17%20FireBall%20Cases_zpscrk5jydp.jpg
I then performed the following steps:
Cut 223 case at the shoulder
Trim all case to same length, squaring the mouth and then deburr
Run case into each of the five forming dies
Runt he case into a small base 223 to shrink the body (probably not needed)
Run the case into the 17 FireBall
Inside neck ream (I made a guide that fits into the depcaper that holder a .168 chucking reamer
As long as the I start with a good square case mouth I have zero loss. I haven't fired these, but I have popped a few primers, I confident the shoulder will blow out. What do you think?
http://i1172.photobucket.com/albums/r566/map55b1/17%20FireBall%20Cases_zpscrk5jydp.jpg