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Powder Check Problem

Howdy! I have been cranking out the rounds on my XL650 for about a month now, and I am very pleased with its performance. I am however, have some issues with the Dillon Powder Check Die.

When I load .45ACP I notice that after about 150 rounds, the buzzer is barely starting to activate, and then after about 175 rounds I am getting a full buzzer. It appears as though the powder check die is thinking that the charge is too light, however every time I weigh a charge that has been "buzzed" it is within 0.1 grain or more commonly dead on, with my intended charge throw. I reset the die by screwing the black portion up a few spins on the rod and I am good for another 150 rounds. Any ideas on how to fix this? Thanks

Lose nut on top of powder check?  If you have to screw it up after some number of rounds, then it must be vibrating down.  Tighten the nut on top.

You might put another jam nut on the bottom of the adjustable spindle, so you can use wrenches at each end to secure the spindle from loosening up.

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