The measure I use is a Redding #3. The drop tube is plastic. Over time and usage, it is not as smooth as when new. When charging 22 Hornet cases, I occasionally spring a powder leak. Necks on the Hornet are thin and fragile, so care must be taken avoid deforming the little boogers by jamming them into the drop tube too forcefully.
The Redding measure is a quality product, as is the rest of their gear. Once adjusted, it will not change.
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