Forming 6x47 Lapua brass

[Dusty Stevens]

Why go to all that trouble? Neck it down, fireform with Bullseye with a wax plug "no bullet". You will have a straight neck and cartridge.

Its hard to neck them down for some reason. They bell out and crinkle. I dont have an issue with any cartridge now but that one posed some issues at first.

 

[DJSBRS]

This will make perfect cases for you.
1.) Run the 6.5 cases thru a 6.5 expander mandrel. This will make straight and the case mouths round.
2.) OUTSIDE chamfer the case mouths. This knocks the "edge" off, aiding in alignment to the BODY die on the next step.
3.) Lube the ENTIRE case all the way up the shoulder AND neck.
4.) Run the 6.5 x 47 case into a 6 x 47 body die. This will form perfect 6 x 47 brass, albeit with thicker neck walls.
5.) Run the body sized case into a F/L die with a .265 bushing. This will "tighten up" the neck.
6.) Run the cases now into a 6mm expander mandrel to push the imperfections to the outside of the case.
7.) Turn the necks down to your desired thickness or at least til they leave enough room in the chamber neck area.
NOTE: there MAY be a tiny "bulge" at the juncture of the neck and shoulder. This little bulge should be turned off at the step of neck turning.
8.) Anneal the brass.
9.) Run back thru the mandrel, use Imperial Dry Neck Lube on the INSIDE of the case neck. Use a Q-Tip to apply.
10.) Prime, charge and seat the bullet. PERFECT brass!

Exactly!

DJ
DJ's Brass Service