Stab crimped primers in LC 13 brass.

[bgokk]

I was reading “You can’t shoot that in a 1911” and checked Love Life’s link http://www.americanrifleman.org/arti...all-cartridge/
Testing The Army’s M855A1 Standard Ball Cartridge. I noticed this statement.

“Its No. 41 primer is identical to the M855’s, but uses a stab crimp rather than the common circumferential crimp, apparently to better withstand the new load’s higher chamber pressure.”

My last trip to the range I picked up all the center fire brass I could find and found about 50 of these:



NATO LC13 with stab crimped in primers. First time I have seen this system on LC brass. There was a noticeable difference in pressure required to push out these primers. Could these be from the new ball cartridge?

Has anyone reloaded any with this style primer crimp?

[Johnch]

Yea I have

A Dillon primer pocket swager is a great tool if you want to load those

Not a cheap made tool that I have used on .....probely 10K+ of both small and large crimped primers
Boy do I wish I had not sold so much brass years ago

John

[Plate plinker]

Does the swage rod do a good job of smoothing out the radius area? I run a 1050 but have never run brass crimped that way.

[ioon44]

I have done a lot of these with a RCBS primer pocket swager on a Rock Chucker press. They loaded and shot fine.

[country gent]

One thing I have noticed with stab cimped primers is swaging is the perfered method as the inital interupted cut with a chamfering tool or reamer chatters and is much harder to get a smooth even cut. Ironing it out with a swage mounted in a press gives better support and alighnment, this makes for a much smoother finish.

[bgokk]

Johnch, Plate Plinker, ioon44 and country gent thanks for your replies. I tried reaming one pocket not easy to do. I will finally have to buy a pocket swager. Doing things on the cheap does not always workout.

[mdi]

I have cleaned up some stab crimped primer pockets. I treat them just like a "regular" circular crimp; remove with a $10.00, 1/2", 60 degree counter sink. Greek HXP ammo has stab crimps but most are fairly light. After cutting out the crimp, they are loaded just like any other brass...

[dale2242]

Could those be factory reloads that have been stab crimped?
I have seen R-P brass that was factory reloaded that had crimped primers.....dale

[Beesdad]

A #2 center bit with a 1/4" collar placed in a drill press makes quick work of stab crimps...just completed 3K..

[Johnch]

Johnch, Plate Plinker, ioon44 and country gent thanks for your replies. I tried reaming one pocket not easy to do. I will finally have to buy a pocket swager. Doing things on the cheap does not always workout.

As I said a great tool

John