He is absolutely correct. 8x57 will FIT in a 30-06 chamber, but it will BLOW UP if fired.
No it won't. I've done it on several occasions to prove my point with other deniers. I have already described what the brass looks like after. I've seen the results a lot of times from different rifles and have yet to see a catastrophic failure of any sort, other than making the case very difficult to reload. (-:/ joke.
It's not something I recommend, especially with solid base bullets but the chances of it occurring in a blow up are alleviated by all of the feebore conditions that lower pressures.
I most certainly wouldn't advise such a demonstration with a semi auto such as a Garand or even a BAR or any other commercial semi auto.
Let me give you an example of a test done by Parker Ackley and his staff. I wasn't convinced so I duplicated it about 20 years later.
Mr Ackley took a Type 38 Arisaka chambered for the 6.5 Jap case and opened up the chamber with a 30-06 reamer.
Without any other alteration, they proceeded to shoot factory loaded 30-06 cartridges through it.
After several attempts to seize or blow up the Arisaka (maybe the strongest bolt action made to that time) they started using hand loads of progressively faster powder under 150 grain 308 diameter bullets.
They finally ended up with a compressed charge of 2400, which finally gave them the results they wanted. The thing is, the action held. The brass flowed all around the bolt head and into the locking lug recesses.
Because of the excellent venting and design the nasty little bits were directed in a safe manner, away from the shooter. The rifle was being held in a rest, similar to the Ransom but big enough for a rifle.
They had to remove the barrel to free the bolt. What they found, surprised them. The action was still serviceable, no lug set back and no stretch that could be measured.
This was done while evaluating which actions were the strongest of those being offered on the Surplus market at the time. Mr Ackley's shop in Utah was very much involved in building custom sporters on all of these actions.
In those days an Arisaka in very good condition but with ground mum could be had for $5. No one wanted them. Everyone was still stuck on the hype generated during WWII that the Japanese rifles were inferior and weak. Nothing could be further from the truth. They were in fact the strongest of all the bolt action surplus rifles.
A friend and I, just out of curiosity decided to duplicate the experiment to see if more than one rifle would give the same results.
We reamed the chamber out to 30-06 specs and after tying the rifle to a logging truck tire, shot the first round of factory loaded, 150 grain ammo. Bang went the rifle and other than a bit of extra lift pressure the bolt rotated and extracted teh cartridge case perfectly. A quick check of the bore showed it was clear.
We continued and then we started loading with 2400 powder. We did this in increments, until we got exactly the same results Mr Ackley achieved.
The receiver on this rifle was also still very serviceable. No lug set back to be seen, nothing we could detect with a magnetometer as far as cracks went and vibration didn't show any seeping cracks on the bolt or action. The stock was shattered. There was nothing in the bore other than some of the brass from the cartridge case which had flowed into the leade area.
I voted against it but my bud at the time wanted to use that action to build a 257 Roberts AI. He did it and to my knowledge, that rifle is still in use somewhere in the Unity Sask. area.
TURF THE LIBERALS IN 2019
Liberals really like POOR people, they're making more of them every day
If you can't vote CPC, stay at home in protest