"It doesn't jibe with Sherman Bell's real testing, as we know."

Yep, and Bell's writings doen't jive with the warning statements that reputable ammo makers put on their boxes... don't fire these shells in guns that aren't chambered for them.

All this long shell in short chamber stuff reminds me of the farmer who walked in back of his contrary mule 1000 times, no problem. Then one day the mule kicked him and broke his leg. Farmer says afterwards, gee, he never did that before.