bushwacker
Regular
- Location
- Winnipeg,Manitoba
I'm slowly getting into reloading and heard about crimping the case.I want to reload 40 s&w and 9mm.What is crimping and do these rounds need to be crimped.
Crimping
- Thread starter bushwacker
- Start date
- Location
- Kumankissmyass, BC
The ABCs of reloading has some great information...
- Location
- behind the grassy knoll
An auto loading pistol usually requires a taper type crimp, this allows for good feeding but still holds the bullet in place.
KK
KK
bushwacker
Regular
- Location
- Winnipeg,Manitoba
Thanks
bushwacker said:I'm slowly getting into reloading and heard about crimping the case.I want to reload 40 s&w and 9mm.What is crimping and do these rounds need to be crimped.
I would get a LEE factory crimp die. I have one for the 40 S&W/10mm Auto and it works great.
All you want to do with the 9MM is apply a taper crimp. Just remove the belling same with .45acp. Both cartridges headspace off the mouth. Can't speak to the .40cal as I don't reload for it but I suspect it is the same. Bullet is retained in the case by friction.
Two good forums for reloading are:
http://castboolits.gunloads.com/index.php
http://reloaders.gunloads.com/index.php
Take Care
Bob
Two good forums for reloading are:
http://castboolits.gunloads.com/index.php
http://reloaders.gunloads.com/index.php
Take Care
Bob
Canuck44 said:
Make sure you resize the 9mm, prior to loading, bulleting and crimping. 9mm case is tapered, not straight. .40 S&W has to be taper crimped. Remember, it is a high pressure cartridge, unlike .45. Do not roll crimp any cartridge that headspaces off the mouth (look in the chamber, you'll see the ledge the case mouth spaces off).
+1 on the lee crimping dies.
