Today's 357Sig chambering has been dropped by many manufacturers and is now more commonly acquired today in a Glock then in any other pistol. Glock offers the 357Sig in 3 different models, (6 between Gen3 & Gen4), and I own a G33 myself. As happened to me, I'm guessing most newbies to this round will never be aware of the issue of "bullet setback" until they already owned the gun.....and even then they may not know.
To anybody contemplating the purchase of any 375Sig pistol, "Bullet Setback" is real with this cartridge and is a PIA occurrence with it more then with any other round that I've bought and/or handloaded in the last 40 years. While it would NOT stop me from still choosing this round again as my go-to carry gun, buyers should at least want to be made aware of it. Under the right conditions, if you are unaware and careless, it can lead to a KABOOM. The bottom line is, the 357Sig cartridge case has a very short and narrow neck to grip the bullet. Thus, it is not unusual for the bullet to be pushed a bit down into the case neck when the slide slams the cartridge into the chamber. I have experienced minor "setback" of the bullet in Speer Gold Dot cartridges with as few as 2 cyclings of the slide, and certainly almost always by the 3rd cycling. (the same with some of my reloads too). A bullet pushed down into the case far enough will cause excess pressure.
So be careful about chambering and unchambering the same one cartridge at the top of your magazine and into the chamber more then once. And if you do a poor job with hand loading this cartridge, it might only take the first time that you feed the cartridge into the chamber that the bullet gets shoved all the way down into the case! ....and BOOM!
For more info on this, google "357Sig bullet setback".
BTW, this is not my photo, but I pulled it from Wiki to illustrate a severe case of "setback".
To anybody contemplating the purchase of any 375Sig pistol, "Bullet Setback" is real with this cartridge and is a PIA occurrence with it more then with any other round that I've bought and/or handloaded in the last 40 years. While it would NOT stop me from still choosing this round again as my go-to carry gun, buyers should at least want to be made aware of it. Under the right conditions, if you are unaware and careless, it can lead to a KABOOM. The bottom line is, the 357Sig cartridge case has a very short and narrow neck to grip the bullet. Thus, it is not unusual for the bullet to be pushed a bit down into the case neck when the slide slams the cartridge into the chamber. I have experienced minor "setback" of the bullet in Speer Gold Dot cartridges with as few as 2 cyclings of the slide, and certainly almost always by the 3rd cycling. (the same with some of my reloads too). A bullet pushed down into the case far enough will cause excess pressure.
So be careful about chambering and unchambering the same one cartridge at the top of your magazine and into the chamber more then once. And if you do a poor job with hand loading this cartridge, it might only take the first time that you feed the cartridge into the chamber that the bullet gets shoved all the way down into the case! ....and BOOM!
For more info on this, google "357Sig bullet setback".
BTW, this is not my photo, but I pulled it from Wiki to illustrate a severe case of "setback".