This is definitely correct. That's exactly what I did with my P2000.The proper way to do this is to buy a .40 and get a conversion barrel, or buy a firearm already chambered in .357 sig.
Typoed on my iPhone.
You are mistaken about the frame in HKs case...the (9mm/.40sw/357sig) USPc share IDENTICAL frames....the .45 is the only one that's sized larger....the only reason HK didn't make a USPf in .357sig was issues with the feedramp angles causing misfeeds in the obscurely shaped cartridge...it had nothing to do with pressures, since HK overengineers everything to bomb-proof....I keep seeing threads on many sites where people want to turn their 40 into a 9 and now a 9 into a 357. When will people learn that if you want a different caliber gun, the only way to do that is to buy a new one!! The ONLY way to convert any gun is in 40 to 357 Sig ONLY. The breach faces are a different size in many guns as are the muzzle holes in the slides.
And, some manufactures WILL NOT build a 357 Sig on their frames because of the operating pressures (40,000 CUP) of the Sig. Their frames may only be rated for +P rounds only MAX. Even most +P+ doesn't hit that pressure. I think proof 9mm is 45K CUP or around there. Not much of a safety margin.
I think someone needs to make a sticky about why you do not want to change the caliber of your handgun except the 40 / 357 conversion.
YOu're right I don't have a clue how expensive it would be or if it's even possible. I'm not a gunsmith nor a machinist that's why I asked if it was possible. As an FYI I found a thread in this very forum where someone has done exactly what I suggested. Thanks for all of your help. Maybe I'm should shake my head now too.That makes even LESS sense...*shaking head*...you obviously have NO idea how expensive that type of machining is...
Dude I'm not fascinated with anything, just asking a simple question.I can search on any forum ( Glock, Sig, Hi-Point?) And find somebody/ anybody who did a halfassed barrel conversion--Google 'Glock and Lone Wofl'--it still doesn't make it cost effective, safe, or smart...why you seem fascinated with taking the overcomplicated and expensive route it beyond me...but its your money and your gun-the point being made here *repeatedly* is its NOT advocated by EXPERIENCED members...you asked for input, you got it....
Mods this one has gone far enough--CLOSE PLEASE
This is my concern as well. As stated above the .357sig is capable of much higher pressures than a 9mm, milling on the barrel would make it even less capable of containing the pressure causing a very unsafe situation for the shooter.But doing this would most likely result in the gun blowing up in your hand.
THIS is why I am requesting this thread be squashed...(Thanks for the professional advice!)...because what is being suggested is dangerous and stupid...and the potential for somebody to skim the thread and perpetuate misinformation is astronomical...its a BAD IDEA--periodPeople definitely need to chill with their word choice a bit. That being said--as a mechanical engineer--i would never advice machining down any gun barrel. Ever. Just spend the money and buy the desired caliber gun. If you were talking about plumbing or something else not life-threatening, then it wouldn't be a big deal. But doing this would most likely result in the gun blowing up in your hand.
I hadn't thought about the markings. Thanks for the input, it's appreciated. Check your private messages.There are a few problems with this idea, while getting a .357 SIG is great:
1. A barrel marked "9mm" becoming a different caliber would be a total no no.
The next guy who picks up this gun and fires a 9mm in there has a good change to loose some finger or ....
And trust me, it will fire!
2. Technically I guess you could do it, I have my reservations how safe this would be.
But let say you test fire it and it comes out fine. Down the road I would always be thinking about this not holding up!
3. This work would cost you more then a new barrel.
Just give me a call and I will set you up with a IGB barrel!