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Is .016" really normal?

I was setting up my 550b yesterday and while reading the manual it said "Overall length (OAL) may vary up to .016”, and this is normal."  First is .016" really considered normal? Second is this varience refering to the manuals or the results I can expect to get from this press.

The link to the manual is http://www.dillonhelp.com/manuals/english/Dillon-RL550B-Manual-May-2007.pdf  The paragraph I am refering to is directly below Station Three.

Actually, the machine alone can contribute only up to about .004" variation, and proper die adjustment will completely eliminate any mechanical deviation. The bulk of the variation is from the dimensional differences from one projectile to the next. Jacketed projectiles exhibit more dimensional variations than cast bullets often do, if a single cavity mold is used. Otherwise the differences are from one mold cavity to another. Factory ammo is far from .000" tolerance. It just isn't that critical.

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