357 sig

[Aszerigan]

A 357 Sig AR platform would be awesome. Kimball and I talked about this a few months back, but the only one making them was Olympic, IIRC.

 

[jeremy]

Who's got the sig uppers ? Could probally just make a magwell block to run beretta 96 or 1911A1, or Glock mags then.... or am I under thinking it....

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A 357 Sig AR platform would be awesome. Kimball and I talked about this a few months back, but the only one making them was Olympic, IIRC.

I am picking up an RMW 45 ACP upper...

 

[jeremy]

Been looking around for a way to top a AR with a upper in 35 Remington also...

Could you not just take A .308 AR and re-barrel it to a .35 Remy?! I thought the .308 and the 35 Remy used the same case...

I'll have to dig through my books now...

 

[MutedUziel]

Also, if you have a sizer for .40 S&W, run it thru that first then you can get away without lube running it thru the .357 die. An extra step, but would eliminate using lube.

I was just going to ask about running them through a 10mm resizing die to get around the case lubing.

 

[Lupin3rd]

Also, if you have a sizer for .40 S&W, run it thru that first then you can get away without lube running it thru the .357 die. An extra step, but would eliminate using lube.

Thanks for the advice but forgive my ignorance, why would sizing for .40 S&W before .357 sig prevent me from needing to lube?

 

[XtremeVel]

Thanks for the advice but forgive my ignorance, why would sizing for .40 S&W before .357 sig prevent me from needing to lube?

Running it thru the .40 die first takes care of the bulk of the work... I have found then when I run it thru the .357 die, bumping the shoulder back and sizing the mouth only produces very little resistance and no chance of a stuck case...

Well, this is at least true in the chambers I load for... I suppose it's possible you could come across another chamber where you might find a difference as to what I am seeing...

 

[Fullmag]

XtremeVel what is your favorite load? Today I tried 12.5 of #9, seemed a little to hot but 12.0gr did better.

 

[XtremeVel]

XtremeVel what is your favorite load? Today I tried 12.5 of #9, seemed a little to hot but 12.0gr did better.

If you're using a 147gr bullet, that would be hot ! Every manual I have has that over max.

My favorite load was a max charge of Blue Dot using Speer's 125gr Gold Dot back when I was shooting a G35 with a .357 barrel. Right at the moment I am only shooting compact sized and have backed it back .5-1.0 gr, depending on whatever brass I am using... Usually I will back it off once I have 5 loadings through the case.

The load I shoot most is Hornady's 124gr FMJ-FP and dropping the charge down to 10.0 gr.

 

[Fullmag]

Oh yeah, that 147gr would be over the top. I use 124gr Precision Delta's JHP. So far favorite powders are Unique, Longshot and then Accurate #9. Data says 13.0gr of #9 is max but 12.5 is HOT. No signs of pressure, not very good groups either.

 

[Rob377]

I've had good luck with 124/5s and longshot. 8.8gr was ~1370fps out of a 4.25 M&P and quite accurate.

 

[IndyGunner]

Also, if you want what the caliber is capable of, you need to load it yourself.

Fact... his reloads are fierce!

 

[gunman41mag]

I only have one 357 Sig gun, a Glock 22 with a Bar-Sto fitted barrel, It's very accurate, but I don't see myself buying another 357 Sig gun, will try buying 200 rounds just to save

 

[IndyGunner]

Cheapest quantity that I could find: Ammunition To Go : 500rds - 357 Sig Fiocchi 124gr FMJ Ammo [357SIGAP] - $194.95