Respectfully,, thor's daddy,, you posted a PARTIAL quote from Ale-8(1).
You left out;
"when using these loads in his guns. Other than that we should accept the published loads in the manuals. The published so-called "Ruger only" loads are assumed to have been tested for safe use in the Ruger guns, and we really do not know for sure what pressures are generated by them, but I feel safe in assuming that the manual writers are not wishing to be hit with lawsuits resulting from ka-booms. There are loads out there that claim to be .45 Colt +P when there is no such SAAMI spec for such a load. Not something I'd personally subject my guns to.
We're all free to do what we like, but rationalizations are personal decisions and don't necessarily carry weight . . . even mine."
Re-read this; "when using these loads in his guns."
We often complain about how badly the media twists a story around by selecting quotes & stuff,, to make it fit their narrative. You have done the same thing here.
I FULLY trust John's info,, knowing he stands to be liable for such things,, in print,, if something ever happens. But he's talking about HIS guns,, HE built,, and HE tested. Not the normal production Rugers.
Next,, look at this post;
"Not that it will put anything to rest, but I'd be willing to bet if you got Ruger to sell you two consecutive BHs in .45 Colt, and someone offered you unlimited SAAMI spec ammo to shoot in one until it failed, and unlimited "Ruger Only" ammo to shoot in the other one until it, too, failed, that the one using factory spec ammo will last far, far longer than the "Ruger Only" gun. The question is, what is that "far, far longer" number? 1000 rds? 10,000 rds? Maybe 25,000 rds? Or even far more?"
A firearm is just a man made machine. It has moving parts. It is subjected to use & abuse on these parts. The points of failure on each part is very relevant to the amount of,, and type of abuse. Just like a car. Buy (2) identical cars. Drive one like a little old lady only going to church on sundays,, and it'll outlast her. Take the other one & start drag racing it & it will fail a lot quicker.
So,, with all respect,, we do try & promote good SAFE gun handling around here. Sadly,, there are too many guns damaged or blown up all too often by people exceeding safe handloading practices. It may not happen the first time,, nor the 10th time,, or even the 1000th time,,, but if you overwork or overstress any machine,, it will fail.
Those are the main points most of us here are trying to get across.
I'm a NRA instructor. One of my very first statements to any & all students is; "SAFETY FIRST!" It is not confined to gun handling,, but to all aspects of shooting. Handloading included.