I'm looking at getting a 357 sig aftermarket barrel for my Glock 20- the main reason is cheap plinking with bulk 9mm 115 gr bullets driven real fast. The thing is I'm researching reloading the 357 sig and it's my understanding that you can't just use regular 9mm bullets, you need to use a 9mm diameter bullet specifically designed for the short neck of the 357 Sig. Is there truth to this because the 124 gr flatnose bullets for 357 sig profile are too expensive to do what I want. I want to get cheap bulk 115 gr 9mm bullets and shoot them in high volumes driven fast. Wanna kill these ads? We can help!