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Durkin Tactical Franklin Armory
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Posted: 12/23/2008 6:32:13 AM EDT
I picked up some of midways blem 180 jhp.  I want to run these out of my 6 in gp-100.  The heaviest I have loaded is 158.  Most data printed data I have seen is under 1200fps.  Then there is the stuff floating around 1400fps on a few user databases.  What is your hot pet load?
Link Posted: 12/23/2008 10:34:42 AM EDT
[#1]
I haven't used that bullet in the 357 mag, but I have used it in the max and gotten pretty good accuracy out of it. From past experience with the Sierra 170JHP 1100-1200fps sounds about right, be sure to use reputable sources for your data, the internet can leave a lot to be desired for reloading data.
Link Posted: 12/23/2008 12:25:18 PM EDT
[#2]
My Lyman #48 manual lists loads for the 180 gr. JHP the MV is around 1000 fps MAX depending on what powder your using for a revolver.   1300+ fps loads are available to use in a Thompson Contender and 357 Mag rifle but don't use them in a revolver.
Link Posted: 12/23/2008 12:53:02 PM EDT
[#3]
I think I will be playing it safe and work till my primers start showing.
Link Posted: 12/23/2008 1:13:16 PM EDT
[#4]
Lil' Gun is the hot ticket for 180 grain .357 Magnum. Hodgdon lists 13.0 grains as start and 15.0 grains as max with a Nosler Partition. My pet load is 14.5 grains under a 180 grain cast RNFP. That's good for 1,137 fps in my 4 inch 686 and 1,732 in an 18.5 inch 1894C.
Link Posted: 12/23/2008 7:05:19 PM EDT
[#5]
My 180 gr load shoots very well at 100 yds. Shooting pop cans offhand with 4" GP.

On a good day 2 or 3 per cylinder.

I use the max listed charge of W-296, WSPM, WW-Super nickel brass.

Work up to the max charge carefully, especially if you are not shooting a Ruger.

I can never do as well with the 158 gr JHP's at long range, but that's me.
Link Posted: 12/23/2008 7:25:22 PM EDT
[#6]
I don't know about the GP100, but in my 44 mag Super Blackhawk I can load the 300 grainers on the second cannalure. XTP bullets have two cannalures on the heavier mag bullets, as a result of this..you can load more powder into the case. They won't fit into most 44 mags, but do work with longer cylinder Rugers. ( DO NOT USE IN LEVER ACTION RIFLES, to long) I think Hornady has load data specificly for the Rugers. You might check in to this.
Link Posted: 12/23/2008 7:51:58 PM EDT
[#7]
Quoted:
I don't know about the GP100, but in my 44 mag Super Blackhawk I can load the 300 gainers on the second cannelure. XTP bullets have two cannelure's on the heavier mag bullets, as a result of this..you can load more powder into the case. They won't fit into most 44 mags, but do work with longer cylinder Rugers. ( DO NOT USE IN LEVER ACTION RIFLES, to long) I think Hornaday has load data specifics for the Rugers. You might check in to this.


We are were discussing 357 loads.

But in the spirit of you hijack, my Redhalk really likes the 300 gr XTP's also.

Now back to 357's......
Link Posted: 12/23/2008 7:56:54 PM EDT
[#8]
Dryflash 3

Sorry, what I was trying to get at was... If the 180s are XTPs they also have the dual cannalure, hence you may be able to load them longer and get  extra velocity.
Link Posted: 12/24/2008 8:57:39 AM EDT
[#9]
Link Posted: 12/24/2008 7:16:47 PM EDT
[#10]
Quoted:
Dryflash 3

Sorry, what I was trying to get at was... If the 180s are XTPs they also have the dual cannalure, hence you may be able to load them longer and get  extra velocity.


No problem, just thought it odd to find 44 Mag info in a 357 thread.
Link Posted: 12/25/2008 6:44:28 PM EDT
[#11]
I have never pushed a revolver load to the max.  I should be looking for flattening of the primer, more resistance when removing case, and speed decreasing or becoming erratic.  Have I missed anything?
Link Posted: 12/25/2008 6:50:41 PM EDT
[#12]
I go by case extraction.

Primers are pretty flat with factory loads, so I don't go by this method.

I have never had sticky extraction with the max listed loads.

This includes the old manuals data which is hotter than the new manuals.
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