Posted: 4/20/2010 6:51:09 AM EDT
|
I know the Sig P229 comes in 357sig 9mm and 40sw. I understand the barrel in the 357 and 40 can be switched between the same pistol to change cal. I read some where...I do not recall where...that a 9mm barrel could be dropped into a 40 and used as a 9mm gun with out issue. However a 40 barrel could not be dropped into a 9mm. Do I have this right?
I am looking at getting a used Sig P229 as a suppressor gun. I already have two 9mm Sigs so I wanted to get a P229 in 40sw but put a 9mm threaded barrel in it to use with a 9mm can. I do not own any 40sw Sigs yet and would like to be able to switch back and forth. Can the same thing be done with the P239 as well since it also comes in 357/40/9? I know diff cal require diff mags. |
|
Quoted:
Quoted:
Yes the same thing can be done with the P239. You can go down in calibers but you can't go up in calibers. The factory 9mm cannot be dropped into a .40/.357, you must buy a conversion 9mm barrel +1 +2 The 357 sig and .40sw slides are exactly the same and can take the higher pressure. Apparently the 9mm slide cannot take the pressure of the 357/.40 cal. If you get a 357sig or a .40sw you can convert to 9mm using a drop in barrel (conversion barrel). But you cannot go up from 9mm. Bar-Sto makes excellent conversion barrels (from what I hear). As for mags...You do not need to change the mags when going from 357 to 40 cal (and vice versa). From what i am told you can put 9mm in the .357/40 mags and it will work....BUT i would definitely not trust my life on it and have never seen it done. |
| After I posted this question I started looking again on Sigs webpage. Came upon their FAQs page. They list it as ..if I read it right...40/357 could be switched but a 40/357 couldn't be switched to a 9mm. I wonder if this is just an old FAQ that has changed? Does Sig make the conversion barrels-not the whole slide kit––or are they just made by aftermarket makers? |
|
Quoted: After I posted this question I started looking again on Sigs webpage. Came upon their FAQs page. They list it as ..if I read it right...40/357 could be switched but a 40/357 couldn't be switched to a 9mm. I wonder if this is just an old FAQ that has changed? Does Sig make the conversion barrels-not the whole slide kit––or are they just made by aftermarket makers? I think you need an aftermarket barrel to go from 40->9mm. Everyone always seems to recommend these. |
|
I have a P229ST all stainless that came from the factory in .40. I could just swap out to a .357 SIG barrel with no issues at all. I decided to go the other route and try and shoot the cheaper 9mm ammo I alread had a stockpile of. I bought a Bar Sto 9mm conversion barrel and it has functioned flawlesslly with either the .40 or 9mm barrell installed. FYI I've also use the factory .40/.357 mags with either 9mm or .40 with zero issues at all. I did try to shoot .40 rounds in 9mm marked mags and they didn't feed quite right. It's not the slide thickness that is the difference, more the locking blocks mounted in the frame itself. If you change those out then the .40 frame can handle the factory Sig 9mm barrel. It was easier for me to just buy the Bar Sto barrel and go shooting, and quicker to change calibers out too.
|
|
Quoted:
Quoted:
Quoted:
Yes the same thing can be done with the P239. You can go down in calibers but you can't go up in calibers. The factory 9mm cannot be dropped into a .40/.357, you must buy a conversion 9mm barrel +1 +2 The 357 sig and .40sw slides are exactly the same and can take the higher pressure. Apparently the 9mm slide cannot take the pressure of the 357/.40 cal. If you get a 357sig or a .40sw you can convert to 9mm using a drop in barrel (conversion barrel). But you cannot go up from 9mm. Bar-Sto makes excellent conversion barrels (from what I hear). As for mags...You do not need to change the mags when going from 357 to 40 cal (and vice versa). From what i am told you can put 9mm in the .357/40 mags and it will work....BUT i would definitely not trust my life on it and have never seen it done. 9mm slides have sections milled out to lighten them. THey are "strong enough", just lighter, and their lack of comparable mass makes them incompatable with long service-life and higher energy cartridges. |
|
Quoted:
Quoted:
Quoted:
Quoted:
Yes the same thing can be done with the P239. You can go down in calibers but you can't go up in calibers. The factory 9mm cannot be dropped into a .40/.357, you must buy a conversion 9mm barrel +1 +2 The 357 sig and .40sw slides are exactly the same and can take the higher pressure. Apparently the 9mm slide cannot take the pressure of the 357/.40 cal. If you get a 357sig or a .40sw you can convert to 9mm using a drop in barrel (conversion barrel). But you cannot go up from 9mm. Bar-Sto makes excellent conversion barrels (from what I hear). As for mags...You do not need to change the mags when going from 357 to 40 cal (and vice versa). From what i am told you can put 9mm in the .357/40 mags and it will work....BUT i would definitely not trust my life on it and have never seen it done. 9mm slides have sections milled out to lighten them. THey are "strong enough", just lighter, and their lack of comparable mass makes them incompatable with long service-life and higher energy cartridges. so you are saying its possible to convert a 9mm to a 357sig with a drop in barrel and as long as I dont shoot it alot I am ok??? |
| What is so confusing about this? If you have a P239/226/229 in a .40 you can also use a .357sig and a 9mm conversion barrel. If you have a P239/226/229 in .357 sig, you can use a .40 and a 9mm conversion barrel. If you have a P239/226/229 in 9mm you cannot use a .40 or .357 sig barrel. |
|
Quoted:
What is so confusing about this? If you have a P239/226/229 in a .40 you can also use a .357sig and a 9mm conversion barrel. If you have a P239/226/229 in .357 sig, you can use a .40 and a 9mm conversion barrel. If you have a P239/226/229 in 9mm you cannot use a .40 or .357 sig barrel. We are all in agreeance with the first part. I agree with your red statement and thats what I have always been told. But 12 guage stated that the 9mm slide can take the pressures of the .40 or 357sig. I was always told that it cannot. Also, 357sig does not have a period before it. So its not .357sig its just 357sig. (Just an FYI.) |
|
Quoted:
Quoted:
What is so confusing about this? If you have a P239/226/229 in a .40 you can also use a .357sig and a 9mm conversion barrel. If you have a P239/226/229 in .357 sig, you can use a .40 and a 9mm conversion barrel. If you have a P239/226/229 in 9mm you cannot use a .40 or .357 sig barrel. We are all in agreeance with the first part. I agree with your red statement and thats what I have always been told. But 12 guage stated that the 9mm slide can take the pressures of the .40 or 357sig. I was always told that it cannot. Also, 357sig does not have a period before it. So its not .357sig its just 357sig. (Just an FYI.) You need to inform Sig Sauer. They are making the same mistake I did. FYI |
|
Quoted:
Quoted:
Quoted:
What is so confusing about this? If you have a P239/226/229 in a .40 you can also use a .357sig and a 9mm conversion barrel. If you have a P239/226/229 in .357 sig, you can use a .40 and a 9mm conversion barrel. If you have a P239/226/229 in 9mm you cannot use a .40 or .357 sig barrel. We are all in agreeance with the first part. I agree with your red statement and thats what I have always been told. But 12 guage stated that the 9mm slide can take the pressures of the .40 or 357sig. I was always told that it cannot. Also, 357sig does not have a period before it. So its not .357sig its just 357sig. (Just an FYI.) You need to inform Sig Sauer. They are making the same mistake I did. FYI When I use the .40sw the bullet size is actually .40. If you said .357 sig would mean the the bullet is .357. But the bullet is a 9mm bullet so it is .355. So saying .357sig is technically wrong. |
|
Quoted:
And technically a .223 Remington bullet is actually .224. So what. Give it a break. http://www.glockmeister.com/357sig.shtml |