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Old May 7th, 2019, 08:31 AM #1
ras_oscar ras_oscar is offline
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ras_oscar ras_oscar is offline
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lee autodrum powder measure why does this happen

Had a strange situation at the loading bench last weekend. Read the instructions and resolved it, but I have no idea why the solution worked.

I'm setting up the press for 30-06 using the lee auto drum powder measure, the powder measure riser with swivel, and the long rifle powder die. I set it up by raising the ram full, screwing the long rifle powder die to just touch, and then screwing in the powder measure with riser attached. With a case in place, the ram was very hard to raise, to the point where the case mouth started to peen over and I feared I would break the powder measure casting or plastic parts. The drum only rotated a third of its stroke, and it stuck in that position when I lowered the ram. Read the directions ( duh) and screwed the powder through die up a dozen turns. Fixed the problem, but I have no idea why. From the powder measure's point of view, it has no idea here the powder through die is in relation to either the shell case or the turret. What I did should not have made a difference, which means I don't fully understand how the measure works. I have previously reloaded 308 with the same powder die with no issues. I understand that the 30-06 case length exceeds the travel of the long rifle die and expect to actuate the powder drops by feel, not by full stroke of the ram.
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Old May 21st, 2019, 05:35 PM #2
noylj noylj is offline
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noylj noylj is offline
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Not sure what the confusion is, but:
The case establishes how high the powder die must be. If it is screwed in too far, the case goes up the expander section and into the case mouth flaring section and, as you try to force the ram higher, it is forced to "rip" the case mouth open. Where your powder measure is now, place a .45 Auto case in the shell plate and try to charge the case with powder, and you'll see that the case in too short to even activate the measure.
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Old August 2nd, 2019, 09:50 AM #3
ras_oscar ras_oscar is offline
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ras_oscar ras_oscar is offline
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Solved it. I was closing the powder adjustment too far. It was extending beyond the face of the drum and binding on the wiper, bending the connecting rod
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