Perhaps I should have said that I hope this rather than think it. We shall find out in September...
I am completely unsurprised that you found you could set your bullet beyond SAAMI maximum length. This is how it is supposed to be. If you found it touched the rifling under SAAMI max. then I would have been shocked.
Setting OAL such that the bullets are touching, or even crushed into the lands, is by no means likely to give best accuracy. It is a technique for advanced reloaders, more applicable to target bullets with jump-sensitive ogive profiles, not hunting bullets in factory chambers.
The smaller the jump the more precise you have to be in every aspect of preparation, measurement and setting up of dies etc. And you may expect small variations to have greater effects than if you were using a sensible tolerance.
And yes, there is a safety aspect. Without a guaranteed modest jump to the lands pressures can spike, even with otherwise safe charges. If tolerances stack up so that a worst case bullet ends up jammed into the rifling then things might go wrong.
Whilst it is interesting to know how far out the bullet can be set before touching, you will not be able determine this accurately unless you use a comparator to measure to the bullet ogive, not the tip.
If you have a comparator, and try measuring some bullets, you may be dismayed to find how variable the distance from ogive to bullet tip is.
Setting up your seating die by measuring to the bullet tip is an acceptable technique if you are using a sensible jump, say 30/1000" or more, but if you are intending to have much less or zero then it is not.
SAAMI spec. for 7-08 is an OAL of 2.530 to 2.800 inches, i.e. 64.26 to 71.12 mm.
http://www.saami.org/PubResources/CC_Drawings/Rifle/7mm-08 Remington.pdf
If you plan to set your bullets at 72mm you are 34/1000" beyond max. spec. Provided they fit in your magazine, and feed reliably, that isn't necessarily a problem, but I wouldn't try this on my very first reloads.
By the way, you may find it easier to use all imperial measurements when reloading. Weights in grains to 0.1, measurement in inches to 1/1000", velocities in feet/second, energies in ft lbs all just seem to work rather better than trying to adapt SI units, nevermind mix and match.
In particular measurement of dimensions to 1/1000" is more practical in the real world than using mm. 0.1mm is too loose. 0.01mm is not measurable with practical tools.
It may not be the French way, but it works well, and is pretty much the standard.
I'd start by setting OAL to 2.800 inches or less, and see how it goes.