9mm Suppressor on Glock 23 357 Sig

[9teenEleven]

Hard to even come up with an accurate thread title for this one. It's a mutant, but I want to get a suppressor. 9mm seems to be the way to go for the quietest centerfire pistol cartridge. However, I don't own a 9mm handgun. I do, however, own a Glock 23 with a 357 Sig barrel. I also reload for 357 Sig, which means I can make custom loads. I know I am going to need a suppressor with a recoil booster for a Glock. I don't want to put a threaded 9mm conversion barrel in a glock 23 because the extractor becomes unrealiable (or so I have read).

My first question is, would a 9mm suppressor fit on a threaded 357 Sig barrel?

My second question is does the glock 23 use the same recoil spring as the Glock 19?

Third question is would I need to switch to a faster burning powder to get 357 Sig down to subsonic 9mm velocities? Can I just use 9mm load data and powders and get the same result or is the different O.A.L. going to mess that data up?

Lastly, would a 357 Sig cartridge moving the bullet at the same speed as a subsonic 9mm be the same DB level as the 9mm?

Any input is much appreciated.

 

[NG VI]

Why not just get a .40 supressor?

 

[9teenEleven]

From what I've read, the smaller the bore, the quieter the sound. I also only use my stock glock .40 barrel and it "glocks" the brass so I don't reload for .40.

 

[Claude Clay]

NG--- the OD of a 9mm bbl will be smaller than a 40: unless like my p239/40 for which i have 9mm and a 357sig conversion barrels.

9teen; good questions....if it helps you the 9mm and the 357sig and the 40 all fire from my sig p239 with the same bbl spring. if this is true of glock, i do not know--but pressures are the same and the gun should not be that different. if you load down the 357 to 9mm speeds you should be ok. glock may want a lighter recoil spring.
have fun

 

[NG VI]

I see, though you would need to get an after-market threaded barrel anyway, so you could kill two birds with one stone, and I'm not sure that a 180 .40 would be any noticeably louder than a 147 9mm or downloaded 147 .357

 

[winchester62]

Yes, the recoil spring is the same.

 

[bigiron1]

To answer your first question...well, yes. Mostly

You have a few choices here, namely is it worth it to go thru all you would need to do just to avoid the purchase of a 9mm handgun?

You can shoot a .357 sig thru a 9mm can...but you can also shoot 9mm and .357 thru a .40 can.

Option 1: Buy a 9mm can and use it on the .357 sig

Option 2: Buy a .40 can, and use both calibers, one gun, Two (or three or four barrels depending on if you have a threaded and non threaded for each caliber respectively) barrels. If you ever end up buying a pistol in 9 mike all you would need to do is change the endcap in the can to accomodate the 9mm barrell.(if you buy a suppressor that can be dissasembled) This will suppress the sound for all three calibers relitavely well. Not exactly sure what this all costs but you can be sure that there will be alot of time waiting around for all this stuff to come together. Endcaps, recoil boosters getting barrels threaded or finding someone to thread the barrels etc.

Option 3:Buy a 9mm handgun and dedicate a suppressor to it. Beretta 92/M9 is easy. any competent gunsmith can throw a quick 1/2x28 thread on there and have you up and running in no time. Coincedently that is the same thread pitch for .22 cal guns and yes the 9 can will fit on the .22s and do a pretty good job of surpressing the report. Best of all... no inertial decoupling things necessary to run the gun reliably.