Originally Posted by Oneida Steve
You have nothing to worry about. OAL is not critical in rimmed cartridges, and the tiny amount you mentioned is not a problem. Enjoy your reloads and welcome to TFF.
just to clarify a little for the OP, OAL on the CASE isn't as critical, since the case headspaces on the rim and not the mouth. Your OAL of the completed round is still VERY critical, a few thousandths isn't anything to worry about, but an oops in reading and a deeper seating of a tenth (.1) or even say 40 thou at a max load could be very bad, even with rimmed cartridges.
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