tark
Member
Mods, If this is not QUITE up to the standard for posting, feel free to 86 it.
A guy walked into the Rock Island Arsenal museum today asking if we wanted this: A box of the copper crush pellets used in pressure testing. It is dated, as can be seen in the first picture, at the beginning of WWII. I have always wondered what these things looked like. They are about a tenth of an inch in diameter and about 3/5 of an inch length. Folded, in the box, was a chart stating what the breech pressure was determined by the amount of crush. Unfortunately, the paper was damaged, but most of it is legible.
An interesting bit of history, at least indirectly related to firearms themselves.
A guy walked into the Rock Island Arsenal museum today asking if we wanted this: A box of the copper crush pellets used in pressure testing. It is dated, as can be seen in the first picture, at the beginning of WWII. I have always wondered what these things looked like. They are about a tenth of an inch in diameter and about 3/5 of an inch length. Folded, in the box, was a chart stating what the breech pressure was determined by the amount of crush. Unfortunately, the paper was damaged, but most of it is legible.
An interesting bit of history, at least indirectly related to firearms themselves.