lwgreer
lwgreer
12 posts
Joined December 2016

Primer Pocket cleaning

Anyone ever try using a tool to clean and ream out the primer pocket to better accept a primer? I am still having issues with primers not seating deep enough. Occasional failure to fire. I push as hard a I dare on the upstroke with a square deal B on 9mm cases and have issues with about 6-8 every time out of 100.

To correct, I pull the bullet and try to seat the primer deeper with about 50% success. Have heard that can do this with the loaded bullet but too chicken.

Appreciate thoughts and experiences.
TomPeters
TomPeters
5 posts
Joined October 2017

RE: Primer Pocket cleaning

This is probably overkill, but I use a toothpick to run around the inner circumference and then I rotate the brass in my hands to inspect for bulges cracks or other defects, for each piece before I put it on the Dillon.

Tom
lwgreer
lwgreer
12 posts
Joined December 2016

RE: Primer Pocket cleaning

I don't believe that is over kill Tom. But have been reading many previous posts from way back and this primer seating issue has been going on for a long time with different loading machines.

I am going to try some sort of cleaning method AND softer Winchester primers to see if anything improves.
Bucolic_Buffalo
Bucolic_Buffalo
58 posts
Joined June 2016

RE: Primer Pocket cleaning

The L.E. Wilson tool and primer pocket reamer will make your primer pockets uniform. They will have a nice little curve on the outer edge to help the primer slip in.

If you choose to go this route, you will need their lath tool, a case holder, and the proper size primer pocket reamer. You will have to do this before you resize the brass. With 9mm, the cases must be pressed in and pressed out of the case holder. Once resized, there is not enough friction to keep the cases from turning freely in the case holder.

I use an arbor press and a couple tools to do this. But all you really need is a soft-faced hammer and a wood dowel rod about 6" long. I use a rawhide hammer to tap the case in. Then holding the caseholder and dowel rod in my left hand, I smack the dowel rod with the hammer and it usually pops out in my left palm.

There is so many makers of 9mm, that it is common to come across range pickups with military crimps. I prefer reaming to swaging. I am not saying, that is your problem. But it could be.
TomPeters
TomPeters
5 posts
Joined October 2017

RE: Primer Pocket cleaning

I have been experiencing a few primer issues (this is for 9mm) in each batch of 500 or so. Typically, I have 3-4 cases where the primer isn't fully seated. I end up (carefully, slowly) using a single stage press and a RAM primer to fully seat the primer and everything is fine.

If I was smart I would segregate the crimped 9mm cases from the non-crimped, and put those aside for if I really need them (I probably would never use them given how much brass I have).

Supposedly there is a way to adjust the primer ram depth ?

Tom
Nik0251
Nik0251
20 posts
Joined September 2014

RE: Primer Pocket cleaning

Old timer told me this 30yrs ago. Tighten shell plate until it just moves around smoothly, then if it stops when you add primer it's to high, so just press a little harder, this will be before you put powder or bullet, shell plate advances and your loading with a smile on your face.