Dutchman195 Posted March 26, 2018 Share Posted March 26, 2018 Recently got a RT1500 to process the backup of 223 brass I have. Problem: Brass coming off the press has a pretty solid edge that feels like the inside edge needs to be deburred. I took a paper clip and drug it across the inside lip and could feel it hang up/drag. Is that normal for this case trimmer? I assume the crimp will take care of the outside edge when I actually load it. Currently on a 2 process cycle on a 1050 Wet Tumble them first since I have been shooting suppressed Station 1: Redding Size/Deprime Station 2: Dillon swage Last station: RT1500 I have put the trimmed cases in both the wet tumbler and a dry tumbler and neither are fully removing the lip. I'm fearful that the lip will drag on the bullet and cause issues when loading/shooting. Is that stupid and I'm just overthinking it or is it actually going to be a problem. Link to comment Share on other sites More sharing options...
metalicat30 Posted March 26, 2018 Share Posted March 26, 2018 I found that the trim die was making my necks to tight. I went to a neck mandrel to open it slightly after the trim/resize. This removed my inside edge issues as well. YMMV Link to comment Share on other sites More sharing options...
L3324temp Posted March 26, 2018 Share Posted March 26, 2018 The Lyman M die cleans up the inside of the neck well enough. It sits in the last station of my 650 after the trim die on my prep tool head. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
RiggerJJ Posted March 27, 2018 Share Posted March 27, 2018 And after seating, a slight crimp will remove the burr on the outside of the mouth. Link to comment Share on other sites More sharing options...
CPD7119 Posted March 27, 2018 Share Posted March 27, 2018 Lyman M die will take care of any bur on the inside of the neck. I run the same setup with an M die and have had no issue. Link to comment Share on other sites More sharing options...
cvincent Posted March 28, 2018 Share Posted March 28, 2018 Me too. M die removes the inside burr. Crimp die removes the outside burr and the flare the M die made. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
xdr Posted March 28, 2018 Share Posted March 28, 2018 (edited) Is the M die specific to 223/5.56? The lyman site only shows 222. Edit:never mind - found it at Midway... thanks xdr Edited March 28, 2018 by xdr Link to comment Share on other sites More sharing options...
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