"But as far as an article about such increases, well, it presents all sorts of problems, including accurate pressure-testing when working up loads--and then persuading some magazine or website to publish the results of handloads exceeding standard SAAMI pressures."

How does Brian Pearce get printed then. Not trying to be troublesome, but it does seem Rifle and Handloader are either cutting edge with this or reckless from what you are saying.