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The_Shadow
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Location: Southeast, LoUiSiAna
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| Posted: May 10 2017 at 6:18am | IP Logged
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I still have my S&W19 and it has seen a good many 357
Magnum loadings, one of my heavy duty loads was a 180
grain
RCBS Silhouette over 11.0 grains of Blue Dot crimped
into the cannelure. These are long bullets but there
are the same
length below the cannelure as the 160 grain cast.
While they chamber in the Model 19, they are too long
to cycle in
the Marlin 1894 lever.
Caliber – 357 Magnum
Powder-Blue Dot 11.0grs
Case – Mixed
Primer – CCI 500
RCBS 180gr Gas Check Silhouette
COL – 1.660” Sized .358”
Velocity 1320 feet/per sec
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RT58
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Location: NE Ohio
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| Posted: May 10 2017 at 8:02am | IP Logged
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"The rationale behind the original 19 was that was something to be carried a lot and shot not so often."
The model 19, and it's various K-framed brothers, were lighter than the N-frames but still chambered for the highly popular and over-rated .357 magnum. That was supposedly why the police wanted them, although I think there was some slick advertising hype from S&W involved. And the "carry often shoot once a year" motto was very popular. The problem wasn't so much being strong enough to handle the pressure as it was handling the pressure over extended periods of time. That was until the forcing cones started cracking. In order to fit a .357 magnum barrel to the K-frame, they had to flatten the bottom of the forcing cone, and this was where they were cracking.
Then S&W brought out the L-frames, after Ruger started running ads why the Security Six was better than S&Ws. And, as they usually did at the time, they listened to the PPC crowd and gave them a heavy, full lugged barrel. This made them front heavy and also made them weigh almost as much as an N-frame, which defeated the whole purpose to start with. Not to mention that if you wanted to lug around a gun that heavy you could have carried a larger caliber.
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LAH
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| Posted: May 10 2017 at 12:51pm | IP Logged
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My 19 has also seen several full loads.
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Old Ranger
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| Posted: May 10 2017 at 2:06pm | IP Logged
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Back on topic.....
John, I emailed Rex that paper by Goins on High-speed.38Spl in .357Mag guns.
And I too like a moderate dose of Unique in a mag case. 6gr to 7gr with the 429 on top is a solid and accurate load in my mod P 4 3/4" and also a 20" 1892 levergun.
Won't load or keep hot, overloaded, or +P loads in any 38Spl case here. Have two earlier models that won't fair well with a hot load. So my "punchers" are all .357Mag.
Rex, I sure hope ya got that L frame hopping with the 358429 now. Between that, the 358477, and the 357446 you should have several years of experimentation ahead of you! And I'm glad ya do! Me? I'm just playing with cowboy bullets and LLA in 38's. I'm getting into this tumble lube business and liking it. Bet ya never thought you'd hear that! Ha! 
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Rex
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| Posted: May 10 2017 at 3:25pm | IP Logged
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I had a 32 oz. jug of White Label 45-45-10 siting on the top shelf in the garage. I heard a thump, the lid flew off when it hit the floor. Let assure you that my garage floor will suffer no leading for years to come.
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Old Ranger
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| Posted: May 10 2017 at 4:07pm | IP Logged
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Opps! 
Well that stinks...
Guess tumble lube business in your neck of the woods is at a standstill....
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John Van Gelder
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| Posted: May 11 2017 at 6:51am | IP Logged
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Here is a link to an article about the mod 19 barrel issue. http://www.gunblast.com/Butch_MagnumLoads.htm
Rex
You probably will not have to worry about slipping and falling in that area once all of the lube dries..
And an article by Jim Taylor. http://www.leverguns.com/articles/taylor/357magnum.htm
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STCM(SW)
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| Posted: May 11 2017 at 10:35pm | IP Logged
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The problem with the "K" frame M19 was with 110 gr bullets.
Heavy rounds like 158 gr did not crack the forcing cone.
I have a M640 "J" frame 357 magnum and don't think there will be any problems except with full power 357 loads, it's a whole lot to control when I shot it last week.
I loaded 357 brass with 158 gr PB bullets with a load of 8 gr of Herco. That is a starting load. Not that bad, the 38 +P loads had more of a kick.
Was trying to duplicate the Buffalo Bore 38 +P load.
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RT58
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| Posted: May 12 2017 at 6:05am | IP Logged
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That article was pretty funny.
Light bullets do more damage, but even the 158s would eventually get the job done. It's not the noses of the bullets hitting the cone that does the damage, but the bases. As bullets pass from the cylinder to the forcing cone the pressure behind them makes them expand over diameter. They then hit the forcing cone and are squeezed back down.
They split at the bottom because that is the weakest point and it also has less support from the frame than the rest of the barrel.
But the statement about changing to "crush fitting" with the 19-5 was hilarious. Like that has anything to do with the price of oranges in Alaska.
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John Van Gelder
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| Posted: May 12 2017 at 6:12am | IP Logged
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The crack does happen, I do not shoot jacketed bullets in my 19, and mostly pretty low pressure stuff.
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John Van Gelder
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| Posted: June 05 2017 at 6:38am | IP Logged
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S&W has reintroduced the Mod. 66, and they have redesigned the gun, so there is no cut out at the bottom of the forcing cone area of the barrel.
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Handloads.Com Forum : Cast Bullets
Topic: .357 loads
