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) 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!