This is only half serious, and I am not necessarily recommending it. But it is true.
I have found that I can ruin an ejector pin and blow a primer while maintaining good accuracy without (yet) blowing up my gun and/or my person. 6.5-284 brass is expensive though, and all be it that I am able to replace the ejector pin without going to a better equipped gunsmith, i would prefer to preserve the working life of my rifle, and I believe that if I were to maintain these pressures continuously, the rifle would give way in some manner sooner rather than later.
that said, when the case comes out without the primer, you are at maximum. Beyond that I believe you are strolling deep into the danger zone.
On a real note, if you are just going to hunt with it, if the average case life for the cartridge is generally 10 shots, I would stick to loads that do no more than cut that in half, to say, five shots. when the primer pocket starts to loosen, you should stop using that case, don't try for one more round from it, even if you are pretty sure it is good for one more. if case necks are blowing early in the case life, it is too hot or you need better brass, or possibly just to aneal it.
Disclaimer:
Nothing I have mentioned here are truely safe reloading practices, and I do not recommend loading that hot EVER. But it is the answer to your question in my experience. If you want something faster than what is easily achievable in your cartridge, you should either rechamber the rifle or get one in a chambering that meets your needs.
