Could you attach a picture of your setup for me to compare to mine?

 

 

If the cam wire does not stay seated in the cam plunger most likely something is keeping the primer slide from moving freely to pick up a new primer.
Make sure the primer slide moves freely, not much else I can tell you without seeing the issue.

The bracket shouldn't break, unless you force it after the cam wire pops out of the plunger.

 

Everything should move up down in and out and actuate freely or something is not installed correct.

 

The only thing that will cause the cam bracket to break, and that is if the primer slide is not moving freely. Now you need to find out what is casing it not to move freely.
1. Is it catching the primer punch? To check this out remove the slide and push the punch up over and over. It should always go all the way down. If it isn't going all the way down every time give it a shot of one shot, it should smooth out.
2. The primer slide is sticking. Use 600 wet or dry sand paper and smooth out the bottom and edges of slide. With out the cam wire installed slid it back and forth by hand. It should move with little effort. A little graphite will help.
3. If it doesn't slid freely check to see if the primer housing body is smooth. If not sand the bottom and front edge.
4. Now check out the wheel on the slide. Make sure the pin is straight and the wheel turns freely. A little graphite here will also help.
5. Make sure the cam wire plunger moves up and down freely.
6. A little graphite on the sub plate will help it move freely.

 

The primer slide when interrupted will bind against the cam wire. My machine is an older one and so the cam wire bends. Yours must be the updated version. Either way the primer slide is locking up and when it sticks and does not slide back to pick the primer from the primer magazine tune it bends or places undue force against the cam wire because it cannot go anywhere except upward in the stuck position.

To figure it out run the press and when it binds keep the handle in position without backing it off and look at the primer slide. I am thinking one of several issues could be the problem.

1) Priming ram is extended up several thousandths causing the slide to stick.

2) The primer magazine tube is upside down and the primers are positioned tilted up... kind of like a tire on a car... as they index down into the load position the bottom primer will rest on it's side. This will not allow the primer slide to index far enough back to retrieve the primer. The reason you may not catch this is because the primer will suddenly fall onto the cup side... or the anvil side and the primer slide will retrieve the primer without fault. One indication of this is the primer seating upside down in the primer pocket.... dead giveaway. The fix.... make sure the side of the primer magazine tube has the machined edge facing down.

3) Primer housing is loose. Combine that with primer magazine tube being upside down and it will magnify the movement problem of the primer slide.

The problem cannot be rough edges on the primer slide catching because the force of the handle will over come that. Rough edges on the slide will only affect the return of the slide into the primer seat position (or when the slide is at rest for better terms) because the spring cannot over come the rough edges at times.

IMO the rollers are not the issue. I have never heard of this and once again a roller out of alignment cannot resist the force from the handle and it will move to full operating position. The strength of the cam wire will overcome rollers that are not true. The bent rollers will just not allow smoothness of the shuttle. Besides, the rollers would have to be grossly out of alignment and you would notice it immediately IMO.

I hope this helps.

Highboy

 

Do you have the old or new style priming ram? The old style has a body that is smaller than the head (T shaped) and powder/primer/brass dust can get underneath it causing it to not return completely. The new style is the same size from top to bottom. If you have the old style, call Hornady and ask them for a replacement.

 

Well it's been a week now. You have either have decided that you have a paper weight, or you got it fixed. If you have a paper weight, I pay $150.00 for each one. If you got it fixed, what was the problem.