Full length sizing .300 Win Mag

#1 · May 2, 2020, 3:03 pm

Hi guys,

today I got my conversion kit for .300 Win Mag.
I've started just with the FL sizing die, to see the result.
Unfortunately the cases aren't resized completely.
I already screwed down the sizing die, till it touches the shell plate, but it's still not perfect.
I tried a RCBS die, which I used in my Rock Chucker before, as I don't found Dillon dies for that caliber.

Does anyone has a tipp for me ?

Regards
Volker

#2 · May 6, 2020, 11:27 pm

You might have to turn the die down an additional 1/8 to 1/4 turn beyond the dies contacting the shellplate to reach proper headspace.

#3 · May 11, 2020, 4:44 pm

I've tried it and turned it a bit deeper, now it works.
Thx.