resizing

DavidJayUden · 09-15-2015, 02:18 PM

It would be interesting to check the outer neck diameter of the NW re-loaded rounds against that of factory Fiochi.
Also try some Prussian Blue on the case neck and bullet and gently drop them into the chamber until they start to stick. Remove and see where it is contacting.
Don't forget to monitor bullet seating depth as too long could be hitting the rifling.
dju

rhuff · 09-15-2015, 03:47 PM

One thing that comes to my mind, is whether or not your FL sizing die is setting the shoulder back far enough on the Northwest brass to allow it to chamber correctly. What brand of sizing die are you using?

If you take a fired piece of this Northwest brass and a piece of Fiocchi brass, and run each through the sizing die. Do not do anything else to the brass, and hand place each piece of brass into the chamber. Are they chambering to the same depth? If not, it could be the die. Fiocchi 30 luger brass has the shoulder set back a fair amount in new ammo. It will fire form, but if the chamber is up to spec, not that much to the shoulder. Just a thought.

P. Octo · 09-16-2015, 02:32 AM

Thank you all. Will do the Prussian blue test. OAL is correct. I use RCBS. Here is what I measured:

New Fiochi case: 0.640

Fired Fiocchi (in my Luger): 0.665"
After FL: 0.661"

Fired NW after FL:0.657"

When I did the comparison between NW and Fiochi, both were once fired and reloaded once before I dropped them Inside the chamber. Actually, I am of a mind to do what I do to all my BR barrels: take a chamber cast.

Noylj: This is not a magazine issue. So far, my 2 magazines have performed flawlessly; it's a cartridge, of one manufacturer, that sticks in the chamber and cannot be manually extracted.

rhuff · 09-16-2015, 05:05 PM

Can you measure the shoulder to base length on each piece of brass. If I read the OP correctly, you were given the NW brass and have no idea what chamber(as to it specs) this brass was fired in. If the NW brass was fired in a very "generous/out of spec" chamber, the fire forming of the shoulder could be causing you a problem.

I own/use an RCBS 30 Luger sizing die, but my die would not set the shoulder back far enough to give me the headspacing that I wanted/needed in some of my 30 luger handguns.

I chucked the sizing die up into a lathe and removed .015-.017in. off of the base of the die. Added a small radius to the inside edge of the base. This "tuning" was enough to get the shoulder of the 30 luger brass(I load many different manufacturers brands of 30 luger brass) to set back to allow 100% chambering in all of my 30 luger barrels.

I have zero experience with your NW brass, and have never even seen a piece of it, so I am sort of walking blind here.

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09-15-2015, 02:18 PM	#1
DavidJayUden Patron LugerForum Patron Join Date: Nov 2008 Posts: 4,047 Thanks: 578 Thanked 1,414 Times in 887 Posts	It would be interesting to check the outer neck diameter of the NW re-loaded rounds against that of factory Fiochi. Also try some Prussian Blue on the case neck and bullet and gently drop them into the chamber until they start to stick. Remove and see where it is contacting. Don't forget to monitor bullet seating depth as too long could be hitting the rifling. dju

09-15-2015, 03:47 PM	#2
rhuff Patron LugerForum Patron Join Date: Mar 2011 Location: Az. Posts: 2,315 Thanks: 2,756 Thanked 999 Times in 734 Posts	One thing that comes to my mind, is whether or not your FL sizing die is setting the shoulder back far enough on the Northwest brass to allow it to chamber correctly. What brand of sizing die are you using? If you take a fired piece of this Northwest brass and a piece of Fiocchi brass, and run each through the sizing die. Do not do anything else to the brass, and hand place each piece of brass into the chamber. Are they chambering to the same depth? If not, it could be the die. Fiocchi 30 luger brass has the shoulder set back a fair amount in new ammo. It will fire form, but if the chamber is up to spec, not that much to the shoulder. Just a thought.

09-16-2015, 02:32 AM	#3
P. Octo User Join Date: Apr 2015 Location: Cannes, France Posts: 32 Thanks: 20 Thanked 5 Times in 4 Posts	Thank you all. Will do the Prussian blue test. OAL is correct. I use RCBS. Here is what I measured: New Fiochi case: 0.640 Fired Fiocchi (in my Luger): 0.665" After FL: 0.661" Fired NW after FL:0.657" When I did the comparison between NW and Fiochi, both were once fired and reloaded once before I dropped them Inside the chamber. Actually, I am of a mind to do what I do to all my BR barrels: take a chamber cast. Noylj: This is not a magazine issue. So far, my 2 magazines have performed flawlessly; it's a cartridge, of one manufacturer, that sticks in the chamber and cannot be manually extracted.

09-16-2015, 05:05 PM	#4
rhuff Patron LugerForum Patron Join Date: Mar 2011 Location: Az. Posts: 2,315 Thanks: 2,756 Thanked 999 Times in 734 Posts	Can you measure the shoulder to base length on each piece of brass. If I read the OP correctly, you were given the NW brass and have no idea what chamber(as to it specs) this brass was fired in. If the NW brass was fired in a very "generous/out of spec" chamber, the fire forming of the shoulder could be causing you a problem. I own/use an RCBS 30 Luger sizing die, but my die would not set the shoulder back far enough to give me the headspacing that I wanted/needed in some of my 30 luger handguns. I chucked the sizing die up into a lathe and removed .015-.017in. off of the base of the die. Added a small radius to the inside edge of the base. This "tuning" was enough to get the shoulder of the 30 luger brass(I load many different manufacturers brands of 30 luger brass) to set back to allow 100% chambering in all of my 30 luger barrels. I have zero experience with your NW brass, and have never even seen a piece of it, so I am sort of walking blind here.