I absolutely agree with everything, except the above paragraph, and we may never agree.
I am not willing to concede that a 308 Winchester is an inherently bad design, simply because you can chamber some loads in a 270 or 25-06 chambered rifle and blow it up. Because the 308 was developed decades later it should never have been allowed on the market..
There are plenty of examples available of those scenarios happening, and the same holds true with other cartridges where the parent cartridge was longer.
I might even be willing to say that based on rounds fired, with rifles chambered in both 223/556 and ammo within reach of another rifle and ammo chambered in 300 Blackout, that per round fired, it might just happen less with the Blackout.
Again that's based on shear numbers fired, and kabooms experienced. It will boil down to who has more shooting accidents and when calculated by percentage.
The other fact that would need to be sorted out would be, Who is more likely to share the video on Uboob for us all to see.The bolt action guy, Or the AR guy?
Does it happen more with the AR crowd? or are they just more likely to share it with the world?
Let's examine this logically, the 308 is a 1952 adopted design, the 300 blackout 2011. The former is a 70 year old adaptation and 59 years later an even worse mistake was made.
In 52 they designed by 1950's standards, one would hope that 2011 designs would have 21'st century standards.
We could expound on the value of the 7.62x51 forever but suffice to say the concept that other chambers could accept the round and produce unsafe conditions (assuming it exists), is bad but 70 years ago less experience was applied to designs. It was 2 years before I was born so I can attribute the design flaw to the time period. In those days average people were less educated but had more firearm common sense.
However in 2011 not only was the chambering mistake made, the new cartridge fit into a magazine designed for the most popular rifles ever sold in the U.S.. The 5.56 blowup by chambering 300 Blackout is well documented. Today people are more educated, not only having much less firearm common sense but having much greater expectations of design safety. In my opinion due to the modern common high average of human stupidity.
I would not invest in companies that produce such obviously flawed designs. Some idiot will do something and convince a jury of their peers and we all know where that goes.
I have custom firearms built, I reload, I have no hot 45 70 loads around to blow up an old Springfield or lever gun, I designed my custom 450 Marlin load for my custom bolt gun so it cannot be fired in inappropriate rifles, all head stamps on my brass for reloaded ammunition match the cartridge and rifle.
Why? I will not live forever, I want the firearms and ammunition I leave for my family to be safe. In the modern world I expect cartridge designs to be thought out and not chamber in a firearm that it can destroy.