rgive me, but...
Don't the .25-06, it's parent the .30-06, and the .308 all headspace on the shoulder?
How can a .308 seat so that the firing pin will hit the primer in the longer '06' chamber?
Just wondering...
30/06, 270 25/06 all share the .357 datum, the 308 W uses a .400 datum, so that part is different along with the length of the chamber from the head of the case to the shoulder, the 308 W is .388 shorter than the 30/06 family of chambers. To attempt to make it more clear when head spacing a 308 W in a 30/06 chamber, the 308W is larger in diameter than the 30/06 at the shoulder by .011 thousands meaning the 308 W has less case tapper. 308 W cases have been fired in 30/06 chambers with .000 head space because the case lodges in the chamber meaning to chamber a 308 W in a 30/06 chamber the case shoulder of the 308 W must be sized when chambered.
As to what rifle survives a catastrophic failure, again, a man volunteered to zero a rifle for his friend, he went to the range, loaded ammo, pulled the trigger and decided to sue everyone because it was their fault. He took the rifle to a smith in North Texas, the smith is one of the few that qualify as “A man of few words” After the rifle bolt was removed, case removed the Smith asked the shooter where he purchased the ammo, and like a good participant he went to his vehicle, recovered the receipt and the ammo and proudly displayed it to the smith, no problem there , you purchased 308 W ammo and someone handed you 308 W ammo, then the smith asked the shooter if the rifle belonged to him and of course the answer was ‘NO!” The Smith then ask him if he knew what chamber was in the rifle, and the shooter said 308 W, then the Smith ask him to read the writing on the side of the barrel and tell him what it says, 25/06 was the reply. and there were no more “ I am going to sue”
No easy to make something fool proof, fools do not read.
Even the finest of rifles are not required to survive the firing of a 308 W in a 25/06 chamber, the case when removed did not have a neck and only the slightest hint of a shoulder, so forget the problem with the firing pin reaching the primer, the smith did say cheap bullet saved the rifle and the shooter from harm, others speculated as to how long the bullet was when it exited the rifle, I believe the jacket was stripped from the bullet first and the lead exited in small pieces then, the jacket left, it was suggested the shooter return to the range and walk his lane for bullet fragments, (shooter retrieved a receipt and what was left of a box of 20 rounds_) and it made the smiths job easier when determining the cause of the failure because the head of the case was hammered so hard there just was not enough information left in the form of information to tell how the case head was stamped.
And time is a factor, and we do not know how much the pressure was lowered caused by blow by gas and case expansion when the case formed to the chamber.
A good bullet would have would have been an obstruction.
F. Guffey
