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Old 11-03-2013, 11:18 PM   #31
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very good information there Greg. i just am not seeing a lot if any 357 Sig in my area and very little 10mm either.
All of mine I order online or buy from my local reloading Jedi-Ninja. FMJs are about $20 per 50 (delivered) online. My local reloading friend can set me up with a good product for about $16/50.

JHP Defense ammo is actually no more expensive than anything else. Easy enough to find 50rd boxes of Rangers or Gold Dots for $25-30 online.

I've been buying 357sig ammo here and there for about 5 years.
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Old 11-03-2013, 11:19 PM   #32
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I've been toying around with getting something in this caliber for awhile. And now this thread has me thinking I need a 357 barrel for my Glock to try out.
That's the best way to do it. Just go buy a $120 Lone Wolf barrel for your existing 40sw Glock.

Apart from the cost of range ammo (which can be mitigated with a 40sw barrel) I like everything about 357sig. Excellent defense round, fun to shoot, precise and flat shooting, decent capacity. I used to have a P226 in 357sig/40sw, now have a G23/G32. My hiking/camping/woods gun is that very Glock with the Lone Wolf 357sig barrel.
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Old 11-03-2013, 11:37 PM   #33
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All of mine I order online or buy from my local reloading Jedi-Ninja. FMJs are about $20 per 50 (delivered) online. My local reloading friend can set me up with a good product for about $16/50.

JHP Defense ammo is actually no more expensive than anything else. Easy enough to find 50rd boxes of Rangers or Gold Dots for $25-30 online.

I've been buying 357sig ammo here and there for about 5 years.
thanks Sweeper. bout the same price as what i usually pay for 40 ammo.

might have to rethink getting a 357 Sig in the future.
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Old 11-04-2013, 12:54 PM   #34
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Feeding is fantastic because you are stuffing a .355 bullet into a .425 hole. Texas DPS was one of the first to buy into it. They were dissatisfied with the .45 ACP penetration. In one of the first shooting with the new caliber, a trooper put one through the A pillar of a truck-tractor, through the bad guy's head, out the cab, Bullet not recovered.

From a handloader's viewpoint, it is pretty straight forward. Sig dies are not carbide. I size with a .40 sizer die (carbide) then neck size/set the shoulder/decap with the Sig die. Every Sig case I have seen has a very small flash hole. The Sig dies have a small decapping pin to match. .40 dies have large pins that get stuck in the Sig flash holes.

The Sig headspaces on the case mouth, but can be made to do so on the shoulder.

.40 S&W cases can be reformed to .357 Sig. Just full length size in a .357 Sig die (I lube with Imperial Sizing Wax and never stick a case). The resulting case will be slightly short but they work. The Sig cases can get a little hard to find, but .40 cases are usually abundant

My pet load launches a 125 gr RNFP hard cast bullet @ 1200 fps.

I have a Lone Wolf barrel for my G-20

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Old 11-04-2013, 02:03 PM   #35
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I got a Lone Wolf .357 barrel for my Glock 22. I did it to be able to get more ammo. Both were in short supply around here so it doubled the availability. It turns out that I like shooting the .357 better. It seems to be more accurate also and I like the higher velocity and penetration .

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Old 11-04-2013, 02:17 PM   #36
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Some of y'all sure make a convincing argument for .357 Sig.

Let me ask you this. Can a gun chambered in .40 S&W just swap out a bbl for .357 Sig, and vice versa? Can a gun chambered in 9mm do the same?

So in other words:
.357 Sig ---> .40 S&W = Yes or no?
.40 S&W ---> .357 Sig = Yes or no?
9mm ---> .40 S&W / .357 Sig = Yes or no?

(Please excuse my naiveté)

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Old 11-04-2013, 02:35 PM   #37
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Some of y'all sure make a convincing argument for .357 Sig.

Let me ask you this. Can a gun chambered in .40 S&W just swap out a bbl for .357 Sig, and vice versa? Can a gun chambered in 9mm do the same?

So in other words:
.357 Sig ---> .40 S&W = Yes or no?
.40 S&W ---> .357 Sig = Yes or no?
9mm ---> .40 S&W / .357 Sig = Yes or no?

(Please excuse my naiveté)
My glock 32 (357) can swap a g23 barrel to make a 40 and use the same mags. It can also swap to 9mm with a conversion barrel and g19 mags. But a 9mm cannot go to a larger caliber unless you swap the entire slide that I know of.
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Old 11-04-2013, 02:39 PM   #38
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Swap out? Well yes, but generally you will only find that in a frame make for 40 S&W.

9 mm to 357 Sig, NO.
40 S&W to 357 Sig, YES, but you will need a conversion barrel.

Why a conversion barrel, because the chamber is 40 S&W while the barrel itself is 9 mm.

It is a slightly longer case than a 40 S&W, but can be used in 40 S&W mags. (so no new mags needed) OAL is about the same, but because of the neck of the 357 Sig case is so short that very few bullets can be used for reloading, the best would be the Hornady TXP 9 mm bullets in 124 or 125 grains.

Here in lies the problem with the 357 Sig. Most 40 S&W pistols are rated at 35,000 psi. The 357 Sig is a 38,000 psi round. Now do you want to beat up your pistol (springs & frame) with a hotter round. My choice was "NO" and put the conversion barrel away and went back to 40 S&W rounds.

If the gun is made as a 357 Sig (Sig or Glock) then you can use a conversion barrel to make it a 9 mm (will require new mags) or a 40 S&W (same mags).

Hope that helps.
Jim

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Old 11-04-2013, 03:20 PM   #39
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I've always felt that the same characteristics that make a good LE round are welcome in my EDC, having a lot if experience with the rounds makes it common sense. I have a certain sense of comfort shall we say carrying my .357 sig.

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Old 11-04-2013, 03:34 PM   #40
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Originally Posted by bigjim
Swap out? Well yes, but generally you will only find that in a frame make for 40 S&W. 9 mm to 357 Sig, NO. 40 S&W to 357 Sig, YES, but you will need a conversion barrel. Why a conversion barrel, because the chamber is 40 S&W while the barrel itself is 9 mm. It is a slightly longer case than a 40 S&W, but can be used in 40 S&W mags. (so no new mags needed) OAL is about the same, but because of the neck of the 357 Sig case is so short that very few bullets can be used for reloading, the best would be the Hornady TXP 9 mm bullets in 124 or 125 grains. Here in lies the problem with the 357 Sig. Most 40 S&W pistols are rated at 35,000 psi. The 357 Sig is a 38,000 psi round. Now do you want to beat up your pistol (springs & frame) with a hotter round. My choice was "NO" and put the conversion barrel away and went back to 40 S&W rounds. If the gun is made as a 357 Sig (Sig or Glock) then you can use a conversion barrel to make it a 9 mm (will require new mags) or a 40 S&W (same mags). Hope that helps. Jim
Jim,

Thanks for the information. I agree with your assessment about starting with a gun chambered in .357 Sig and getting the conversions for the other two calibers, based on the higher pressure.

S&W M&P .357 Sig..... Sounds strangely appealing right now ...
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