Just thought i'd give everyone a heads up. I have been, in the process of a few days, loading up a run of 5,000 LRN bullets. I've been using 5.1g of w231 at an OAL of 1.256. this morning i decided to stop at the 1/2 way point just to check my OAL. What i found kinda surprised me, My OAL dropped to 1.230. I decided to take off my seating die, and to my surprise i found a bunch of lube buildup inside. The buildup was causing me to seat deeper than when i started. Anyways, just thought i'd give everyone a heads up that haven't come across this before.