Need help starting 200 grain .357 @ 1000 fps

[Deavis]

Greetings,

I just joined this forum because I am positive you all can help.

I need to to figure out where to start. Data for this problem is scarce.

What I want:

My 200 grain TC boolits (old stock from National Bullet Company). They are .862" long.

Loaded long-ish to COAL 1.650, to get closer to the lands but still run reliably in the magazine.

Reasonable accuracy to shoot gray diggers, nutria and the like.

The gun is a Ruger 77/357 rifle with a 11.5" barrel 1:16" twist. I also have a suppressor for it, so the stability is paramount (yes they are legally possessed).

According to this site it should stabilize:

http://www.jbmballistics.com/cgi-bin/jbmstab-5.1.cgi

Powders I have include 2400, Bullseye, Unique and Trailboss.

Anybody want to venture a range with these powders? I'm not opposed to buying more, I just have lots of the above.

Many thanks in advance!

[Nobade]

10.0gr. 2400 is a good place to start. Our local guys use that load under 200gr. bullets in their 357 rifles for big bore cowboy silhouette, it's got a loopy trajectory but hits hard at 200M. Should mess up a squirrel pretty good.

You might want to look into powder coating your bullets for use through a suppressor so you don't fill it with bullet lube.

To get the most of those bullets they will likely need to be seated out longer than magazine length and used as a single shot. Bet it's more accurate that way.

-Nobade

[robg]

My 195 gr boolits give 1250 fps with11.5 gr of 2400 in my trapper .work up from 10 gr to find what that rifle likes.

[jmort]

.357 Magnum (Lee Precision Data)


https://www.loaddata.com/images/database/.357%20Magnum94.gif


Warning! Notes: Small Pistol Primer. With NEVER EXCEED LOADS maintain Minimum Over All Length or longer. (Modern Reloading Second Edition - Richard Lee)


Be Alert: Publisher cannot be responsible for errors in published load data.







Wt.
Bullet
Powder Manufacturer
Powder
Charge
Velocity (FPS)


200
Jacketed
Vihtavuori
VV-N110
11.4
1107


Remarks: start load; min OAL: 1.697


200
Jacketed
Vihtavuori
VV-N110
12.4
1204


Remarks: never exceed; min OAL: 1.697


200
Jacketed
Vihtavuori
VV-N105
8.4
1020


Remarks: start load; min OAL: 1.697


200
Jacketed
Vihtavuori
VV-N105
9.4
1123


Remarks: never exceed; min OAL: 1.697


200
Jacketed
Vihtavuori
VV-3N37
6.4
891


Remarks: start load; min OAL: 1.697


200
Jacketed
Vihtavuori
VV-3N37
7.2
991


Remarks: never exceed; min OAL: 1.697


200
Jacketed
Vihtavuori
VV-N350
6.2
838


Remarks: start load; min OAL: 1.697


200
Jacketed
Vihtavuori
VV-N350
7.1
966


Remarks: never exceed; min OAL: 1.697


200
Lead
Winchester
W-296
12.4
1335


Remarks: never exceed; compressed; min OAL: 1.540; 35,000 cup


200
Lead
Alliant
2400
9.4
1176


Remarks: start load; min OAL: 1.575


200
Lead
Alliant
2400
10.0
1245


Remarks: never exceed; min OAL: 1.575; 32,800 psi


200
Lead
Alliant
Blue Dot
7.5
1124


Remarks: start load; min OAL: 1.575


200
Lead
Alliant
Blue Dot
8.2
1225


Remarks: never exceed; min OAL: 1.575; 33,900 psi


200
Lead
Hodgdon
H-110
11.5
1212


Remarks: start load; min OAL: 1.540


200
Lead
Hodgdon
H-110
11.5
1212


Remarks: never exceed; min OAL: 1.540; 31,200 cup


200
Lead
Hodgdon
H-4227
10.5
1062


Remarks: start load; min OAL: 1.540


200
Lead
Hodgdon
H-4227
12.0
1174


Remarks: never exceed; min OAL: 1.540; 31,800 cup


200
Lead
Hodgdon
HS-7
7.5
1041


Remarks: start load; min OAL: 1.540


200
Lead
Hodgdon
HS-7
8.5
1142


Remarks: never exceed; min OAL: 1.540; 29,600 cup


200
Lead
Alliant
Unique
5.5
1015


Remarks: start load; min OAL: 1.575


200
Lead
Alliant
Unique
6.0
1105


Remarks: never exceed; min OAL: 1.575; 33,900 psi


200
Lead
Alliant
Herco
5.5
1015


Remarks: start load; min OAL: 1.575


200
Lead
Alliant
Herco
6.1
1105


Remarks: never exceed; min OAL: 1.575; 33,900 psi


200
Lead
Alliant
Bullseye
4.8
995


Remarks: start load; min OAL: 1.575


200
Lead
Alliant
Bullseye
5.3
1085


Remarks: never exceed; min OAL: 1.575; 33,900 psi


200
Lead
Hodgdon
HS-6
5.2
822


Remarks: start load; min OAL: 1.540


200
Lead
Hodgdon
HS-6
6.8
1073


Remarks: never exceed; min OAL: 1.540; 30,600 cup


200
Lead
Winchester
W-231
5.1
990


Remarks: start load; min OAL: 1.540


200
Lead
Winchester
W-231
5.5
1060


Remarks: never exceed; min OAL: 1.540; 42,500 cup


200
Lead
Alliant
Green Dot
4.5
932


Remarks: start load; min OAL: 1.575


200
Lead
Alliant
Green Dot
5.0
1015


Remarks: never exceed; min OAL: 1.575; 34,000 psi


200
Lead
IMR
800-X
7.5
995


Remarks: start load; min OAL: 1.590


200
Lead
IMR
800-X
7.5
995


Remarks: never exceed; min OAL: 1.590; 36,000 cup


200
Lead
Alliant
Red Dot
4.2
918


Remarks: start load; min OAL: 1.575


200
Lead
Alliant
Red Dot
4.6
990


Remarks: never exceed; min OAL: 1.575; 33,600 psi


200
Lead
IMR
IMR-4227
12.5
966


Remarks: start load; min OAL: 1.590


200
Lead
IMR
IMR-4227
12.5
966


Remarks: never exceed; min OAL: 1.590; 35,500 cup


200
Lead
IMR
SR-4756
6.2
885


Remarks: start load; min OAL: 1.590


200
Lead
IMR
SR-4756
6.2
885


Remarks: never exceed; min OAL: 1.590; 35,900 cup


200
Lead
Hodgdon
HP-38
3.4
709


Remarks: start load; min OAL: 1.540


200
Lead
Hodgdon
HP-38
4.2
821


Remarks: never exceed; min OAL: 1.540; 28,100 cup


200
Lead
IMR
SR-7625
5.1
795


Remarks: start load; min OAL: 1.580


200
Lead
IMR
SR-7625
5.1
795


Remarks: never exceed; min OAL: 1.580; 35,700 cup


200
Lead
IMR
700-X
4.3
795


Remarks: start load; min OAL: 1.590


200
Lead
IMR
700-X
4.3
795


Remarks: never exceed; min OAL: 1.590; 35,800 cup


200
Lead
IMR
PB
4.6
780


Remarks: start load; min OAL: 1.590


200
Lead
IMR
PB
4.6
780


Remarks: never exceed; min OAL: 1.590; 35,700 cup

[w30wcf]

9.2/H4227 IN 38 Special cases =1075 with a 200 gr cast / 24" barrel with very good accuracy @ 100.you could back that off 5 to 10% with 2400 for about the same velocity..

w30wcf

[Larry Gibson]

Start at 4.5 gr of Unique and work up in .2 gr increments until you hear a "snap" just in front of the suppressor. The "snap" is the beginning of the air moving around the bullet compressing and creating the "sonic crack". With the shape of that bullet it may begin to snap before 1000 fps. When you here the "snap" back off .4 gr which will give you a cushion for any atmospheric changes.

Larry Gibson

[Deavis]

I knew I came to the right place!

Thank you all!