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Dillon RT1500 Confusion

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I recently purchased the RT1500 for reloading my .223. Everything went fine with the setup, but I noticed that on the outside of the case, on the neck, the trimmer is leaving marks. Best way I can describe it is "chattering." Is trimming the outside of the neck normal for this trimmer? The length is perfect. The mouth cut is smooth and done well, but I'm unsure about these chattering marks on the neck.

 

Thanks!

So is it possible that my case is spinning in the trim die, and causing this? I full length resize/pop the primer prior to trimming.

If you are full length resizing your cases first, then it is quite likely that cases are spinning inside the size/trim die.  We suggest you just deprime before trimming, and use a headspace case gage to adjust the height of the size/trim die to match minimum headspace first, then thread the trimmer on the die to adjust for trim-to length.

Mario and redbr have reacted to this post.
Marioredbr

Yeah. I took an unsized case tonight and ran it up in the die without turning the trimmer on, and the chattering marks are there. Something in the trim die, it seems. I put a new die on order. Thanks for the input.

wrap a strip of scotchbrite around a mandrell and use that you clean the interior of the top of the trim die.  See if that makes a difference.

Hi, I’m converting my 550c to .223 and am having trouble at station 1 in deprimimg.  I have to use a lot of muscle to remove the primer.  I’ve loaded a couple thousand 9mm with very little muscle removing the primers.  All thoughts, recommendations & suggestion’s welcome.

Are you certain the problem is in depriming? Remove the depriming assembly and see if the effort needed to pull the handle down  reduces.  If it does, then inspect the inside of your cases to verify if they are Boxer or Berdan primed.  Usually, insufficient case lube is the reason for difficulty in pulling the handle down.

Mario has reacted to this post.
Mario

THANK YOU!!!  I pulled the decapping pin and have the same issue.  I’m new to reloading rifle cases and appreciate your advice.  What lube do you recommend?

Mario

We recommend using a case lube based on lanolin. Dillon Precision, Midway USA both offer a pump spray lube using lanolin. Redding and Brownells offer a lanolin paste lube, Imperial sizing wax. Avoid the water soluble and synthetic case lubricants, as they are not sufficient for use with bottleneck cases.

Mario has reacted to this post.
Mario

Wow, what a difference, thank you.  Been going back and forth between the 550b and my square deal B and I’m realizing I like the automatic indexing.  Question, does the tool head from the 550b fit the 750?  If so I’m thinking about upgrading to the 750.  Are RL550b’s selling used?  It will come with the 9mm dies/toolhead.

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