Into the madness, indeed.
I’ll share a particular observation I have had which even I feel flies in the face of my generally accepted philosophy....
So I’ve shared frequently my poor experience with a Rock Creek barrel in 6mm Creedmoor from a few years ago. Despite burning out many other barrels, I have NEVER ridden the wave as far with any other individual barrel as I did with that tube, and I observed something I simply cannot yet reconcile. That barrel lost over 250fps over the life I fired from it, using the same load, same powder lot, same primer lot, same bullet lot, same brass (annealed each firing), and same neck tension... however, shooting confirmation ladders every 150rnds or so, the charge weight nodes didn’t move, despite the velocity slipping as much as ~25fps per 100rnds fired. I jumped to a higher node by the end of the competition season to give myself back the speed to keep my DOPE relevant, but despite the fact I was bleeding speed like crazy, my “nodes” were clearly powder charge nodes, not really velocity or barrel time nodes.
OBT, magic velocity goals, velocity nodes, seating depth nodes, etc... none of it reconciles. But the Satterlee velocity curves, modified Newberry OCW targets, and long range Audette ladders all confirmed my charge weight node was holding, even though my velocity was changing a foot per second after every 4th round fired...
Doesn’t make any sense at all, and I don’t intend to ever ride a barrel down that long of slope ever again to retest, so the end result of the observation is largely that about the time I think I have something figured out, something will come along which totally flips the script - but shooting small is easier than understanding WHY it shoots small.