PWC, please forgive.
Redding has virtually identical misinformation on their web site about what happens when the round fires. As does so many printed pages across all mediums.
A friend built 4 magnificent rifles chambered to a 7MM Wildcat with a reamer he made. He took the first one to the range, he had 5 case head separations out of the first 10 rounds he fired. He called, I told him he could have tested the rifle for that problem before he left the shop, I told him I could have met him at the rang and fixed the problem long enough for him to fire form his cases.
Years later one of the rifles cam back, he took the rifle to smiths that had to tell him they did not have a clue, one of them informed him he needed a bore scope. SO? He took the rifle to a smith with a bore scope expert. Nothing, no clue.
The next place he visits? Not a problem but he asked me where would I start. I told him, he then went to the Internet and got advise
He wanted to show me what he learned on the Internet; he had to admit he had no ideal what they were talking about but it sounded like they knew what they were doing.
I explained to him when the bolt closes the chamber becomes a dark place, I explained to him that drives most reloaders to the curb. I explained to him I could determine where the case was located in the chamber before and after the firing pin hit the primer, I explained to him I could determine if there was a chance the case would suffer case head separation when the round fired. And I informed him I could measure free bore as in how far the bullet has to travel before it contacts the rifling.
Anyhow; when he left he knew what he had to do to repair the rifle. When he got home he jumped onto the Internet to locate the tools we used. No luck, he called asking where the tools came from. I explained to him if he wanted the tools we would have to make them.
On another day he called and wanted to know what was wrong with Remington Ammo. I told him their phone number was on the box; call them. And then he shows up with 15 fired 30/06 cases and 5 that failed to fire. Before he arrived they had managed to hit the primers 6 times with firing pins in three different rifles. The first rifle was new.
I measured, pulled the failed to fire rounds apart and weighed and measured them and compared the fired cases with the failed to fire cases and I was impressed with Remington ammo.
I removed the primers, I installed the primers back into the case they were removed from and then dug out one of my M1917s with a killer firing pin.
Like magic, ever primer busted off with one pull of the trigger. I knew where the case was in the chamber, I demonstrated the technique/method. When he got home he called back wanting to know where the tools and gages were available from. Same answer, we got to make them. And then there are tools that are available, finding someone that knows how to use the tools could be difficult.
And I said: Now we need to call the owner of the new rifle that purchased the Remington ammo, and that was not going to happen, no one got the phone number
F. Guffey