I’ve been sitting here de-rimming 22lr basically all day and I had a question come to mind. How do they put the rim on the thing to begin with?
I’ve been sitting here de-rimming 22lr basically all day and I had a question come to mind. How do they put the rim on the thing to begin with?
I think that is a question that you will have to contact a factory that makes 22lr's.to find out how they really do it. now you got me wondering to. but I would think they have a press that does it. D Crockett
There's a video on youtube by 22plinkster at CCI factory but I don't think they show how rim is formed.
The case starts out as a larger cup and then formed to rim dia lengthening as it goes. Then the body is formed down to size and last is trim to length. This is done in a progressive die the case moving thru each station and finished cases dropping out the end of the die. These presses run fast and produce a lot of cases in an hour.
at federal we had a machine that was actually called a header. basically you got the drawn tube from another machine then they run it through the header which basically uses dies to form the heads/rims. drawn tubes are finished dimension, the head was added last, well before final anneal and washing.
I just watched that YouTube video yesterday. I would love to work at that place. Would be our own best customer!
"Speak softly and carry a big stick; you will go far."
~Theodore Roosevelt~
BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
BR | Bench Rest | M | Magnum | RN | Round Nose |
BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
GC | Gas Check |