Thank you ! You should read the entire book .
Thank you ! You should read the entire book .
I believe a 30-06 case would be shoved in a long wayI've got pics from an old book of a 30-06 Frankfort arsenal ( I think ) anyway a US military case that was loaded but no primer flash hole . It compressed a loaded case , powder and bullet a considerable amount . Now remember , it couldn't release the bullet and the case was a std loading so it compressed the powder and mushroomed the case , sizing it to the rifles chamber .
Good proof that the primers make some serious pressure.I use to fireform brass in a solid piece of steel with just a chamber with just a small dia ( aprx .025 ) vent . Used primers only
The book I was referencing has the ingredients of primers , unfortunately it's from the 1950s. I do have a more recent formula list but ? . It could be in the BENCHREST shooting primer .Good proof that the primers make some serious pressure.
The Federal primer lists Nitroglycerin as a component. Other brands dont.
Nitroglycern would seem to add sensitivity, with a faster reactive response when struck by the firing pin?
View attachment 1076852
https://www.federalpremium.com/safety-information/sds
Alinwa, good link. Ty.
Except when bullets stay in the case neck.Good proof that the primers make some serious pressure.
No idea.What's the volume ratio from the space inside a seated primer dented by a firing pin to that of a cartridge case?
30 caliber bullet, .0745 square inch. ~1/13.4th500 psi in a .223 (~1/16 sq in) or ~300 psi in a .308 (~1/10 sq in)