bouletbill

I prefer using a RCBS neck sizing die to using the Lee collet die, the collet die leaves longitudinal marks on the necks. It also has variable crimping results with different type-make cases and increased bullet run out. (wobble)

The cap on my collet die is aluminium and the die should be lubricated with a dry lube like powdered graphite or a dry spray lube for smoother operation. The mandrel floats and moves during the crimping-sizing operation and this can and does cause more bullet run out or wobble.

I'm reloading Greek HXP, Remington, Winchester and Prvi Partizan cases and I did not like variable differences in neck sizing with the collet and case brands. The old fashion basic Lee Loader and a plastic hammer has more uniform neck sizing, less bullet run out and smoother necks along with the results of standard RCBS dies.

If you watch the instruction video your "arm" and your downward force controls internal neck size and thus neck tension. My elbow doesn't have an adjustment knob on it to set at 25 pounds and this can cause too many variable sizing-crimping results.

My Lee Collet die only came out for the photo session in this posting and was put back into the rear of the storage cabinet to gather more dust. Sizing accuracy and uniformity are more important to me than "speed" and I reload for accuracy.