Dillon RT1200 .223 problems

Kadams1563

Giver of Bad Advice
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Feb 13, 2017
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I have a Dillon RT1200 set up on a Dillon tool head. When trimming .223 I can’t seem to get it low enough to trim unless the trim die is really squeezing the body.

I resize prior to trimming but it still take a lot of force to run the case up in the trim die. It feels like it’s resizing it much more then required when trimming.

Anyone have this problem?

I don’t have a comparator for .223 yet as I only load for my AR and haven’t got that serious about it yet.
 

Sheldon N

Blind Squirrel Finds a Nut
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Sep 24, 2014
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Pacific Northwest
My Dillon 223 trim die for the RT1200 sizes the body more than my Forster die, but it doesn't seem too bad. For diameter it sizes the body at the shoulder about 5 thou, and it sizes the base of the case about 1 thou.