Primer not seating fully and primers not entering casing

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johhny12gauge

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So I am new to reloading. I bought a Dillon Square Deal B 9mm and had it set up on a new bench. It was as secure as possible (bench not drilled into ground but no wiggle, also a new Stack On Reloading bench). I was able to load only 4 rounds out of 55 properly because the majority had the primer not seating fully and in some cases the primer did not even enter the case. I spent 2 hours on the phone with Dillon and we went over:
-machine parts not being screwed in enough
-wrong primer size
-wrong primer holder (part that holds primer and inserts it)
-primer direction
-pull and push on handle
-any play in the set up
-types of primers (Winchester)
-brass, tumbled with old primers in than punched out at Station 1

The guy and I could find nothing wrong with the machine or my actions. He suggested I send it back which I did.

Anyone have any other ideas why the primers were not seating fully or seating at all?
 
I noticed some primer pockets on some casings has little or no chamfer at all. Chamfer is the slight tapering by the primer pocket rim that makes primer to seat into the pocket. I also have this issue on few of my reloads. Are you using once-fired or previously fired brass? If you are using new brass, check the pocket for chamfer before you buy.
 
The brass was range brass, some once fired some not. I just tumbled it and put it in the press. I'm not sure if it is military brass, Im gonna say I doubt it.
 
thunderflash said:
IVI is military brass for sure ! ---- sounds like your brass has the military crimp.
decrimp & try again or sort your brass.
Click to expand...

I suspect so too as most if not all those manufacturers have put out military ammo. If you don't have a de-crimper (Dillon super-swage for example) or a way of de-crimping then find some commercial brass and give 'er!
 
So if some of my brass are mil spec what is the new reloading process I should do (step by step please)? Should I buy the Dillon Super Swage 600, is it 9mm compatible?
Thanks for your help Gunners
 
Since a small percentage of brass pick ups is military, I just toss the military pistol brass. I do keep, use and like IVI military rifle brass, and I de-crimp the primer pocket with a 3/8 counter sink in my electric drill.
 
johhny12gauge said:
So I am new to reloading. I bought a Dillon Square Deal B 9mm and had it set up on a new bench. It was as secure as possible (bench not drilled into ground but no wiggle, also a new Stack On Reloading bench). I was able to load only 4 rounds out of 55 properly because the majority had the primer not seating fully and in some cases the primer did not even enter the case. I spent 2 hours on the phone with Dillon and we went over:
-machine parts not being screwed in enough
-wrong primer size
-wrong primer holder (part that holds primer and inserts it)
-primer direction
-pull and push on handle
-any play in the set up
-types of primers (Winchester)
-brass, tumbled with old primers in than punched out at Station 1

The guy and I could find nothing wrong with the machine or my actions. He suggested I send it back which I did.

Anyone have any other ideas why the primers were not seating fully or seating at all?
Click to expand...

This is exactly why i suggest newbies start on something less than a fully progressive press. The answer to your problem is simple. You are using crimped military brass without having first removed the primer crimp.
 
FC NT seem to use a slightly different primer; I recycle them, don't even bother to try to prime them.
Have a look at the other cases; see if there are any crimped primers.
Were the cases properly seated over the priming ram? If they shift out slightly from the carrier rotating, they may not be lined up.
 
This seems to be a plausible explanation, I am new to reloading and didn't even know about decrimping the primer pocket. The guy on the line at Dillon didn't mention that either. So what is the proper way to go about reloading 9mm with the Square Deal B?

They were lined up, just did not go in fully. I never knew there are so many variance in 9mm brass.
 
johhny12gauge said:
This seems to be a plausible explanation, I am new to reloading and didn't even know about decrimping the primer pocket. The guy on the line at Dillon didn't mention that either. So what is the proper way to go about reloading 9mm with the Square Deal B?

They were lined up, just did not go in fully. I never knew there are so many variance in 9mm brass.
Click to expand...

Simplest solution is to NOT use brass with the crimp. If using commercial brass just follow the step-by-step instructions that came with your press and you'll be fine.
 
I use a SDB in 9mm, and it is a good tool - but it is not just a matter of feeding brass and bullets and pulling the handle. Operation has to be deliberate, making sure that everything is correct before pulling the handle.
 
So if i buy the Dillon Super 600, what should my new process with the SDB be? I was:
-tumbling than
-Station 1-4
the result was 4 proper rounds out of 55, if I throw the Super 600 in the mix what are the steps than?
 
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