I've seen some awesome numbers from the 357 magnum and 357 sig loads, even the 9mm in the 124gr can throw the bullets fast enough to maybe justify running the heavier jacketed 357 sig bullets, especially in glock 17,35 and 6" barrel lengths. Do you need to do anything to the bullets to load them in 9mm or 9x25 Dillon?
We are discussing the sizes of jacketed bullets...Most 9mm bullets and 357Sig bullets are sized at 0.355", whereas the 357 Magnums are sized at 0.357", difference is 0.002". They make some bullets jacketed bullet sized at 0.356" for 38Super
That being said I have shot the 0.356" & 0.357" for the 9x25 Dillon barrels (Bar-Sto and LWD) and I'm sure I could shoot them through the 357Sig (LWD) barrel because I also shot the 0.356" all the time. :D
I have read where others have shoot the 0.357" through their 9mm guns, I've only shot cast bullets sized 0.356" and 0.357" through the 9mm guns.
The 125 gr gold dot for 357 SIG is an excellent bullet for hot 9mm loads seeking deep penetration with moderate expansion. Slightly increased powder room over other HPs of that weight class and expands fine at 1250 fps. No special prep needed as.it's a .355 diameter bullet.
If you want to use .357 Magnum bullets I'd size them to .355 with a LEE pass-through sizer.
Quote from: The_Shadow on December 04 2013 07:15:10 PM MST
We are discussing the sizes of jacketed bullets...Most 9mm bullets and 357Sig bullets are sized at 0.355", whereas the 357 Magnums are sized at 0.357", difference is 0.002". They make some bullets jacketed bullet sized at 0.356" for 38Super
That being said I have shot the 0.356" & 0.357" for the 9x25 Dillon barrels (Bar-Sto and LWD) and I'm sure I could shoot them through the 357Sig (LWD) barrel because I also shot the 0.356" all the time. :D
I have read where others have shoot the 0.357" through their 9mm guns, I've only shot cast bullets sized 0.356" and 0.357" through the 9mm guns.
The main thing is to slug your bore; 9mm bore sizes seem to vary a bit. My understanding is .355" is the standard 9mm bore in the US, but .357" is more common in Europe. My gen4 Glock 9mm bore is .357", so on the rare occasion that I shoot jacketed bullets, I usually use .357" Montana Gold hollow points.
Quote from: mag360 on December 04 2013 05:22:15 PM MST
I've seen some awesome numbers from the 357 magnum and 357 sig loads, even the 9mm in the 124gr can throw the bullets fast enough to maybe justify running the heavier jacketed 357 sig bullets, especially in glock 17,35 and 6" barrel lengths. Do you need to do anything to the bullets to load them in 9mm or 9x25 Dillon?
One point to consider. Precision Bullets makes a nice 9mm 125 grain "black bullet". Upon request he will size them for 357 magnum instead of the normal .355" 9mm diameter. Sort of the same thing in reverse of what you want to try.