So, if there are any number of folks on the hide that are converting 5.56 to 300 blk and you've already figured this out, forgive me. I'm sometimes late to the party.
So, I've got a shit ton of 5.56 brass that I'm converting to 300 blk. After the initial rough cut, as you know, the case mouth is pretty rough with burrs and whatnot. It was really getting monotonous having to deburr and chamfer those cases in prep for resizing and necking down. I had already deprimed them and was planning on wet tumbling with ss pins anyway, so I tossed them in, added dawn and lemi-shine, and let them run for about 4.5 hours. I was pleasantly surprised with how well they came out, as far as the case mouths were concerned. The tumbling really did a good job of deburring the cases, saving a bunch of manual labor.
Hope this helps some of you fellas.
So, I've got a shit ton of 5.56 brass that I'm converting to 300 blk. After the initial rough cut, as you know, the case mouth is pretty rough with burrs and whatnot. It was really getting monotonous having to deburr and chamfer those cases in prep for resizing and necking down. I had already deprimed them and was planning on wet tumbling with ss pins anyway, so I tossed them in, added dawn and lemi-shine, and let them run for about 4.5 hours. I was pleasantly surprised with how well they came out, as far as the case mouths were concerned. The tumbling really did a good job of deburring the cases, saving a bunch of manual labor.
Hope this helps some of you fellas.