Lee Loadmaster and primers

[Clarke123]

Your very first step would be to call LEE ... their people are knowledgeable and will help you!
The thing that jumps into my mind is a loose or improperly installed shell plate (if it has one).

The priming process will "raise" a loose shell plate and result in a "crowned" primer seat (not good!)


Good Luck, and Let us know what happens!

BTW: If you are using TULA or WOLF Primers, they have "short legs" and need to be firmly seated!

 

[1006]

Try making sure that you push up on the press handle firmly each time. You should be able to feel the primer go into the case.

 

[fuelman1]

I use a Lee Pro 1000 for my 45 acp and have never had this problem. Wolf and Tula are a tighter fit but still go in with no problem. I think checking with Lee like Clarke123 suggested would be good idea. Seating the primer on a Lee press requires you to make sure you firmly bring the handle completely back up to fully seat the primer. You can definitely feel the primer seat.

 

[Shrek926]

We love our loadmaster, our 9mm run flawless... But it's very specific and deliberate movements each and every time. I had to tweak the primer depth at first, but have zero issues now.

 

[Fast450]

Hmm , my Dillon 550 never has a problem seating primers

 

[BkBigKid]

Ok I am a idiot!!!!

Reset my primer according to lee's video and added a extra two bolt face turns. I also realized while depriming and sizing I wasn't hitting the stop on the press but a tad off. Going from a single stage to a 5 station progressive I wasn't putting the right force to seat all 5 dies leading to primers not seated completely.

I ran 80 rounds through the press and every primer appeared to be seated correctly not a one above the rim of the primer pocket. Hopefully I get them to the range tommorrow and make sure I got it right before reloading the rest of my cases.

Thanks for your input but this one was operator error.

 

[BkBigKid]

All rounds fired today not a hicup!!!!

 

[BkBigKid]

Another important lesson learned... BOLT the thing down to the bench. Screws will pull out found out the hard way 350 rounds through it.