360 Dan Wesson cartridge in a Rossi 92 357

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donhuff
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Re: 360 Dan Wesson cartridge in a Rossi 92 357

Post by donhuff »

I'm spreading data around depending on the case I used and the bullet I used.

I started out this thread with the 158 grain bullet so that's why I'm coming back here now with this update.


I tried H110 powder and LilGun yesterday with some 158 JSP like I had been using before. I like 300 mp powder but it doing some stuff that's making me think it's a little to slow with this weight bullet and this much powder capacity.
The LG load sounds totally different from the previous 300mp loads. More of a sharp pow, instead of the deep boom of the 300mp. I know to some of you that is going to "sound" :D kinda silly, but there really is something to it as a lot of times when it don't sound right, the chrono backs me up with big SD numbers and low velocities.

Magtech 158 JSP bullets and 360 dan wesson cases

H110 @ 20.5 gr..........1996 FPS had one over 2000 but also one slightly flat primer. powder was right at the base of the bullets. SD was 7.1. I call it Max.

LilGun 20.0...............1960 FPS sd was 42 and primers were round. Needs more powder.
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16" SS 92 357
20" BL 92 357
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Re: 360 Dan Wesson cartridge in a Rossi 92 357

Post by GasGuzzler »

H110 did well I think. It likes no space right?
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donhuff
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Re: 360 Dan Wesson cartridge in a Rossi 92 357

Post by donhuff »

It did "ok" and yes "they" say to fill the case to the bottom of the bullet.

But you did see that I did not load lilgun high enough, right? I was extrapolating data (wild azz guessing) as to where to start and how high to go. I guessed to low.
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to bad those that know it all, cant do it all!
16" SS 92 357
20" BL 92 357
20" SS 92 44
20" BL 92 44
20" Bl 92 45C
20" Bl 92 454
SS Rio Grande 30-30
Bl Rio Grande 45-70
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Re: 360 Dan Wesson cartridge in a Rossi 92 357

Post by donhuff »

So I shot a few more loads with LilGun to try and find the max with this bullet and the powder too.

Last time I stopped at 20.0 grains so this time I started at 20.5 and moved up from there.

same magtech 158 JSP bullet and 360 DW cases lilgun powder

20.5...........1963 fps

21.0...........2055 18.0 sd

21.5...........2091 and the sd jumped back up to 34. lilgun just will not give me the low sd numbers like the H110 powder does. While others seem to think that a low sd is so important, I have not seen this to be as important as it "should" be. As we will see later!

22.0..................2113 fps and sd of 20.0 Primers were getting a little flatter and I can tell that extraction is starting to get just a little sticky, so I'm calling it enough.

At 21.0 grains, the powder was right at the base of the bullet so let's call that 100% full, but no compression. The primers looked great and the cases extracted normal, so I'm making that my MAX.

The cannelure on the bullet is .300" from the nose like most 357 bullets, so at that position I am giving away almost .050" of OAL. If I were to seat the bullet out that much I could probably load with that extra grain of powder and go faster. I need to find another 158 grain bullet with the groove a little father back to make use of that extra room.

One of the five shot string that I shot with the 22.0 grain load produced a separated case. I do not think that the load was so hot and that's what cause it to separate, but I know it did play a role. But the primer looked ok. The case had an odd look to it before I shot it, and I really should have culled it and not fired it. I'm a little puzzled as to why it broke as It had only been fired once before. I had a few others that also had a different look to them so I'm going to have to do a little research and see if I can figure it out.

I'm wondering if my problems the other day of these new cartridges sticking to the expander pin has something to do with it. I had to pull up on the press lever extremely hard to unstick them, and I'm wondering if I might have stretched some cases a little, right where it separated. They stuck so hard that I pulled the rim off of a few cases. I also put a hard crimp on most everything I load, and with these hot loads, I might need to back off of that a little.

After getting the chrono data I shot a few to see how they would group. I had loaded several extras with the 21.0 grain load as I had a feeling the this would be about where I would call it a max load.
They grouped ok for a lever gun at 100 yards and I felt pretty good about them, especially since they were going so fast. But the group I got with the 180 grain cast made these groups look BAD! No need to buy jacketed if I can make a cast one myself that will out shoot the jacket. I might try another brand of jacketed later to see if I can better these results.
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Don Huff

to bad those that know it all, cant do it all!
16" SS 92 357
20" BL 92 357
20" SS 92 44
20" BL 92 44
20" Bl 92 45C
20" Bl 92 454
SS Rio Grande 30-30
Bl Rio Grande 45-70
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Re: 360 Dan Wesson cartridge in a Rossi 92 357

Post by Archer »

Don,
I've had some squeaky straight walled brass but I can't recall in thousands of rounds each of several straight walled cartridges ever getting anything stuck to the expander to the point of ripping off rims.
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Re: 360 Dan Wesson cartridge in a Rossi 92 357

Post by donhuff »

Yeah, I've had squeaky ones before too, but never like these were. I stuck another one yesterday that had been fired once before. It broke into halfway up the case! And what's so odd is that no amount of lube will stop it.

I have tried expanding in two steps now and that has helped. First time with a .355 ball and then with a .357 ball with a flare. That's aggravating. Most of the once fired brass is working ok, just a little sticky.
Don Huff

to bad those that know it all, cant do it all!
16" SS 92 357
20" BL 92 357
20" SS 92 44
20" BL 92 44
20" Bl 92 45C
20" Bl 92 454
SS Rio Grande 30-30
Bl Rio Grande 45-70
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