11-22-2023, 01:02 AM
scott>' Wrote:I tried a dummy round as you suggested. The bullet ended up creeping in slightly. Im guessing my neck tension isnt sufficient.
So you had the loaded cartridge increasing overall length and with the dummy round it decreased length. How much? Does it feed smooth. I would agree there is a tension problem. Measure the bullet area that contacts the case mouth. If it is consistent with the widest part of base section of the bullet, I would say that it is time for a new sizing die. I have never reloaded cavity back bullets. Also take a case that has been resized and measure the outer diameter of the case mouth. Do the same with seated bullet (dummy round would work). Should give you a good idea of what your neck tension is (the difference). It has been a long time, but I am pretty sure for my precision bolt guns I would shoot for .002 neck tension. I would expect more for an auto loader. I hope that all is articulate enough and makes sense. Holler if you need anything else, but still think a new sizing die is the answer. Sorry buddy. I haste wasting money