Did you ever test the 320s against the 286gr partitions in the wax tubes? I’m curious if the 320s penetrate more or less given their likely larger expanded diameter.
No, I haven't--but wouldn't test them in Test Tubes. Instead I use stacks of dry newspaper to test bullets that might encounter heavy bone, having four through plenty of experimentation that it simulates field results closer than anything else, both in retained weight and depth of penetration. You can also shoot more than one bullet into the same stack, providing side-by-side comparisons.
My educated guess, however, based on past experience is 286 Partitions would out-penetrate 320 Woodleighs, for the reason you stated: the larger mushroom of the bonded Woodleigh.
