Dillon Square D Press and AIM

[Delspa1]

Hello all my fellow gun friends. I am an avid reloader and have a Square Deal press. I have had it for over a year and now it seems to be encountering a few issues. So I look to my fellow re-loader friends for guidance.

I have an M&P 9MM as my weapon of choice

1- Primers were not seating correctly or flipping. Dillon replaced most of the system for the primers and all seems to be better.

2- The casing seems to wedge in the chamber checker and barrel on over 60% of my re-loads. I was advised by a friend to re-check the carbide re-sizer in stage 1. It may not be resizing the whole casing.

3- Finally, the Overall Length seems to also be causing the rounds to wedge in the riffling of the barrel.

So when you add a poor seat primer to the expanded base of the casing with an overall too long projectile (about 1.155 to 1.16), you know what I get every so often?
A mess that I need to yank apart. LOL

I ask my fellow reloaders here if there are different dies, different re-sizer's or a good OAL that has been know to work better.

I will be talking to Dillon to see if I need new parts replaced or the whole damn thing.

 

[Fusilier]

I have a SBD that I've used for years now for thousands of rounds. I don't believe you have much choice of dies as the SDB only uses the specific Dillon dies made for that particular press.

What I do is I decap/resize my competition brass on a single stage press with a small base carbide sizing die. Then when I reload on my SDB, it is easier since the SDB isn't doing the resizing. I also check my reloaded rounds in a Dillon chamber checker and I've never had a problem with the reloading case being too long.

Here are a few thoughts.

Is your chamber/bore clean? Your rounds could be hanging up on fouling and not the rifling.

Are you loading lead or plated/FMJ bullets? I had a lot of difficulty with loading lead bullets due to build up of lead/lube residue in the press. It mostly resulted in my loaded round OAL getting shorter and shorter but perhaps a build up could be your problem. I only load jacket/plated bullets so I don't have to pull and clean out my seating die every 150 rounds.

Make sure your last stage - the crimping die, is adjusted so that all it does is take the flare out of the case mouth. It should not crimp the case mouth into the bullet. The 9mm, like other auto rounds, head spaces off of the case mouth and if it is crimped in too far, you might have a round that goes too far into the chamber rather than stopping at the chamber's sharp edge. When you look at the edge of your brass case, after reloading and crimping, the sides should be straight right to the very edge.

It is pretty hard to have primers flip over once in your primer tube. Are you sure you are loading your tube correctly? I use a Vibra-Prime which are not made anymore and are really hard to find used (i.e. I've never seen a used one for sale), but it allows me to watch every primer as it gets loaded in the tube. Make sure you have the correct primer parts (large primer vs. small primer) in the press.

Try placing a new casing into the press on every second stroke. You can look at the primer station to see if there is anything funny happening there. The primer should be raised slowly with the throw of the arm. If the primer slider thingie is sticking, and snapping in under spring pressure, that might be a reason for poor primer feeding. Take your priming system apart, make sure it is clean and reassemble it without tightening ever screw overly tight.

I suspect you may have tried/looked at these issues but you asked for ideas so that's what I have to offer.

Best of luck. I hope you get it all worked out.

 

[waynesixgun]

Hello all my fellow gun friends. I am an avid reloader and have a Square Deal press. I have had it for over a year and now it seems to be encountering a few issues. So I look to my fellow re-loader friends for guidance.

I have an M&P 9MM as my firearm of choice

1- Primers were not seating correctly or flipping. Dillon replaced most of the system for the primers and all seems to be better.

2- The casing seems to wedge in the chamber checker and barrel on over 60% of my re-loads. I was advised by a friend to re-check the carbide re-sizer in stage 1. It may not be resizing the whole casing.

3- Finally, the Overall Length seems to also be causing the rounds to wedge in the riffling of the barrel.

So when you add a poor seat primer to the expanded base of the casing with an overall too long projectile (about 1.155 to 1.16), you know what I get every so often?
A mess that I need to yank apart. LOL

I ask my fellow reloaders here if there are different dies, different re-sizer's or a good OAL that has been know to work better.

I will be talking to Dillon to see if I need new parts replaced or the whole damn thing.

There that should fix it..

 

[colinjw]

I have had a SDB in 9mm for years & have not had problems with it.

Check that you are not over expanding the case prior to bullet seating & also check that you are not over crimping and causing a bulge in the case.
The 9mm is a tapered case and can be fussy to get set up 100%.

 

[Delspa1]

I have tried and tried to solve all my problems, I may now just contact Dillon and send the entire unit back to them so they can re-outfit and correct the issues.