When trimming cases, usually rifle not so much straight walled handgun cases. The manuals have a trim to length and of course the max case length.

Why do they have a trim to length of (.01) 1/100th less than the max length?

Say for .223 Rem the max length is 1.760 and the trim is 1.750?

If using the little Lee trimmers I believe they only trim back to the max length.

Is the trim length to allow for "growth" of the case??

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