Seeing the most recent (yet another) post about 32 gn SBK's keyholing, and Fred C's point about MV (Mean velocity I assume), this

I wonder if seating out so far means that I've never reached proper velocity, since I've only tested to a tad under the max suggested powder charge (hogdon's data for Benchmark powder) for the assumed COAL of 2.25"??
I've been seeing some crazy things going on with my golden round... and this has got me thinking
Savage 12 VLP, .204 of course...