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Author Topic: 357 max pressure question  (Read 521 times)

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Offline schoolmaster

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357 max pressure question
« on: June 15, 2010, 06:51:01 AM »
I am shooting 180 grain SSP bullets with 28 grains of 1680 and a Rem 7 1/2 small rifle primer in my 357 Max on an SB-2 frame. Anybody have an idea how much pressure is being generated with this load?
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Offline quickdtoo

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Re: 357 max pressure question
« Reply #1 on: June 15, 2010, 06:56:34 AM »
Best advice is contact the ballistician at Accurate Arms,  johan@ramshot.com , he'd likely be able to tell you,  depends a lot on COL tho. I ran it thru QuickLoad which is just a prediction, but their 26.5g max load at 2.383" COL which is seated long w/.200" seating depth, runs 43.1kpsi, 28gr is 51.8kpsi.

Tim

http://www.accuratepowder.com/data/PerCaliber2Guide/Handgun/Standarddata/35738Cal(9.2mm)/357%20Remington%20Maximum%20page%20105.pdf

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Offline schoolmaster

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Re: 357 max pressure question
« Reply #2 on: June 15, 2010, 10:43:40 AM »
Gosh you are quick! I thought it ran pretty high.
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Offline deadeer

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Re: 357 max pressure question
« Reply #3 on: June 15, 2010, 09:10:26 PM »
I am using 30gr AA1680 w/180ssp, Rem case, wsr primer, seated way out with no pressure signs. Am getting right around moa at 200 yd in a 24" Encore. Also 22gr H110 with 180xtp or 180ssp is scary accurate in this gun, little slower, but sub moa at 200yd.

Jay
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Offline schoolmaster

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Re: 357 max pressure question
« Reply #4 on: June 17, 2010, 02:35:57 AM »
Yeah those encores take lickin and keep on tickin.
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Offline jeepmann1948

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Re: 357 max pressure question
« Reply #5 on: June 17, 2010, 04:12:55 AM »
Does the length of a barrel have an effect on the chamber pressure or just the velocity and cartridge overall length?
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