DragoonDrake
03-25-2011, 08:31 PM
Alright I seem to have developed a new problem. I have been using the same sizing die for my 7mm TCU since I got it (which has been less than 2000 bullets). When I first started using I had no problem. Well tonight while sizing my latest casting, my ram started to stick a little. I looked at the bullet and saw what looked like a little copper in the lube. I sized another and had no problem sizing, but there was some more copper in the lube.
I pulled the die out and it had little copper slivers on the outside of it and in the lube holes. I completely cleaned it and looked for burrs, but did not see any. I sized a few with no problem, then started to get more copper slivers. I took the die out again and cleaned it. This time I touched the holes with sand paper and polished the mandrel. I polished the inside of the die as well. I put the die back in and it took another handful to get the same problem again. I am using Hornady gas checks.
Please let me know what I should do? TYIA
Adam
I pulled the die out and it had little copper slivers on the outside of it and in the lube holes. I completely cleaned it and looked for burrs, but did not see any. I sized a few with no problem, then started to get more copper slivers. I took the die out again and cleaned it. This time I touched the holes with sand paper and polished the mandrel. I polished the inside of the die as well. I put the die back in and it took another handful to get the same problem again. I am using Hornady gas checks.
Please let me know what I should do? TYIA
Adam