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Tuzo · September 24, 2009, 09:24 AM

Thanks for the reply Bpratl. Compared the RCBS neck sizer to the Lee collet die and discovered that the RCBS expander is 0.223" diameter and the Lee is 0.222." Then I read the Lee instructions.

Turns out that I was not pushing the collet enough to completely compress the neck against the expander. This resulted in a relatively loose neck and little neck tension against the bullet while seating. Next step is to remove a few bullets with an inertial puller and, depending on the effort required to pull bullets, either fire my reloads as-is or pull all bullets and resize.

September 24, 2009, 09:24 AM	#3
Tuzo Senior Member Join Date: June 14, 2007 Location: Louisiana Posts: 797	Problem solved Thanks for the reply Bpratl. Compared the RCBS neck sizer to the Lee collet die and discovered that the RCBS expander is 0.223" diameter and the Lee is 0.222." Then I read the Lee instructions. Turns out that I was not pushing the collet enough to completely compress the neck against the expander. This resulted in a relatively loose neck and little neck tension against the bullet while seating. Next step is to remove a few bullets with an inertial puller and, depending on the effort required to pull bullets, either fire my reloads as-is or pull all bullets and resize.