This is my first post, and I am hoping someone can help me out.
I recently completed a run of .45 ACP. I am using a Dillon 550B, with Dillon pistol dies. I used the round nose end of the seating stem. I loaded 230gr, .451 dia, RN polymer-coated bullets from Eggleston Munitions. The brass is new Xtreme primed brass, and the bullets were seated for a COL of 1.265. After the run, I case gauged all the rounds. About 50 of the rounds failed to case gauge. After inspecting the bad rounds, I noticed that the cases were bulged on one side. I pulled the bullets and ran them through the press again. Most of them passed case gauge, with a few needing to be pulled for a second time, then loaded again. I finally got all 250 rounds to pass.
Once I finished the RN poly coated, I started a run of Speer 185gr, .4515 die JHP. The bullets were seated to a COL of 1.215. I loaded a few rounds, then case gauged them...they failed. Paying careful attention to having the bullet straight up and down while seating, I managed to load 9 test rounds which did pass case gauge.
What is figured out is that on the bad bullets, when the bullet is being seated, it is being seated crooked. What I cannot figure out is 'Why?". I have never had a problem like this before.
After the JHP, I loaded some 230gr, .452 dia RN poly-coated bullets from SNS Casting. I could NOT get any of these to seat straight enough to seat correctly and pass case gauge.
I have adjusted the bell (both increase and decrease). My crimp dies is set to crimp just enough to make the mouth of the case straight. On whim I tried to use the SWC end of the seating stem, but that had no effect. I disassembled the seating die, thoroughly cleaned it, and reassembled it. I even loaded some blanks using different brass with various headstamps...none of these actions seem to have fixed the problem.
Any ideas? Any help would be appreciated.
I recently completed a run of .45 ACP. I am using a Dillon 550B, with Dillon pistol dies. I used the round nose end of the seating stem. I loaded 230gr, .451 dia, RN polymer-coated bullets from Eggleston Munitions. The brass is new Xtreme primed brass, and the bullets were seated for a COL of 1.265. After the run, I case gauged all the rounds. About 50 of the rounds failed to case gauge. After inspecting the bad rounds, I noticed that the cases were bulged on one side. I pulled the bullets and ran them through the press again. Most of them passed case gauge, with a few needing to be pulled for a second time, then loaded again. I finally got all 250 rounds to pass.
Once I finished the RN poly coated, I started a run of Speer 185gr, .4515 die JHP. The bullets were seated to a COL of 1.215. I loaded a few rounds, then case gauged them...they failed. Paying careful attention to having the bullet straight up and down while seating, I managed to load 9 test rounds which did pass case gauge.
What is figured out is that on the bad bullets, when the bullet is being seated, it is being seated crooked. What I cannot figure out is 'Why?". I have never had a problem like this before.
After the JHP, I loaded some 230gr, .452 dia RN poly-coated bullets from SNS Casting. I could NOT get any of these to seat straight enough to seat correctly and pass case gauge.
I have adjusted the bell (both increase and decrease). My crimp dies is set to crimp just enough to make the mouth of the case straight. On whim I tried to use the SWC end of the seating stem, but that had no effect. I disassembled the seating die, thoroughly cleaned it, and reassembled it. I even loaded some blanks using different brass with various headstamps...none of these actions seem to have fixed the problem.
Any ideas? Any help would be appreciated.