Originally Posted by RickF
Originally Posted by calikooknic
Originally Posted by northcountry
Wonder what brass I could use to make 358Norma cartridges and not be short? Thanks. Cheers NC



300 Win mag. I’ve read that people cut the chamber to be able to expand and not trim.


That’s what I did. After the chamber is reamed to 358 Norma, follow that with a 35 Whelen reamer to get to a case length of 2.61 inches. Lets you use trimmed 300 Winchester brass necked up, which I think improves the cartridge as the longer neck grabs more of those heavier bullets.

Making brass is easy. Your die needs a tapered expander ball from 30 to 35 needless to say. Use new brass (I used Winchester) and it’s a one pass deal to have 358 Norma longneck brass.


That's good intel Rick. I've got a .358 Krieger and a Benchmark waiting to get done. Was thinking of a Newton again, but I hate trimming the brass after forming it. I have to take a .100 off. I am wondering if I shouldn't just do a 35/375 Ruger or the 358 Norma like you mentioned?

Semper Fi