357 mag-how hot?

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All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.

Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
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Steve

357 mag-how hot?

#1 Post by Steve »

How hot do you recon i can stoke the loads up in my Winchester 357 using Rogers excellent bullets?

Normally i just use 6 grains of either Alliant 2400 or Vectan A1 with CCI 500 primer and a hard cast lead bullet,but i'd like to push my range out a bit.I checked my reloading book and it recons the starting load with 2400 powder is 13.9 grains upto maximum 15.4 using a 158grn lead bullet,but i know for safety these figures are quoted for pistols.

I know theres a limit i can push a non jacketed round and literally the amount i can stuff inside a cartridge,but i like to experiment.
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Re: 357 mag-how hot?

#2 Post by dodgyrog »

The boolits are quite hard so will take 'a kicking' and the lube should be up to it as well.
Let me know how you get on.
I'd also try Viht 340 and 3N37 as well.
Purveyor of fine cast boolits.
All round good guy and VERY grumpy old man.
Steve

Re: 357 mag-how hot?

#3 Post by Steve »

dodgyrog wrote:The boolits are quite hard so will take 'a kicking' and the lube should be up to it as well.
Let me know how you get on.
I'd also try Viht 340 and 3N37 as well.
Well i already made some Roger,but figured if someone said they were unsafe then i'd just pull em' and start again.

I've started off at 13.9grns and finishing off at 16.Have also made 10 rounds using 10grns of Vectan A1 to see how they go.

I did an experiment in garden yesterday with burning a small amount of both the Vectan and Alliant powders to see which was quicker-the Vectan A1 was the fastest burn so thought that was the one i shouldnt hike the grains up as much.

Might nip down the range wednesday afternoon to have a pop.
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Re: 357 mag-how hot?

#4 Post by Sandgroper »

From http://data.hodgdon.com/cartridge_load.asp
Rifle loads for the 357 magnum are listed.


I did an experiment in garden yesterday with burning a small amount of both the Vectan and Alliant powders to see which was quicker-the Vectan A1 was the fastest burn so thought that was the one i shouldnt hike the grains up as much.
Powder burn rates from http://www.hodgdon.com/burn-rate.html
Listed From Fastest to Slowest:
1 NORMA R1
2 Winchester WAALite
3 VihtaVuori N310
4 Accurate Arms Nitro 100
5 Alliant e3
6 Hodgdon TITEWAD
7 Ramshot Competition
8 Alliant Red Dot
9 Alliant Promo
10 Hodgdon CLAYS
11 Alliant Clay Dot
12 IMR, Co Hi-Skor 700-X
13 Alliant Bullseye
14 Hodgdon TITEGROUP
15 Alliant American Select
16 Accurate Arms Solo 1000
17 Alliant Green Dot
18 Winchester WST
19 IMR, Co Trail Boss
20 Winchester Super Handicap
21 Hodgdon INTERNATIONAL
22 Accurate Arms Solo 1250
23 IMR, Co PB
24 VihtaVuori N320
25 Accurate Arms No. 2
26 Ramshot Zip
27 IMR, Co SR 7625
28 Hodgdon HP-38
29 Winchester 231
30 Alliant 20/28
31 Alliant Unique
32 Hodgdon UNIVERSAL
33 Alliant Power Pistol
34 VihtaVuori N330
35 Alliant Herco
36 Winchester WSF
37 VihtaVuori N340
38 IMR, Co Hi-Skor 800-X
39 IMR, Co SR 4756
40 Ramshot True Blue
41 Accurate Arms No. 5
42 Hodgdon HS-6
43 Winchester AutoComp
44 Ramshot Silhouette
45 VihtaVuori 3N37
46 VihtaVuori N350
47 Hodgdon HS-7
48 VihtaVuori 3N38
49 Alliant Blue Dot
50 Accurate Arms No. 7
51 Alliant Pro Reach
52 Hodgdon LONGSHOT
53 Alliant 410
54 Alliant 2400
55 Ramshot Enforcer
56 Accurate Arms No. 9
57 Accurate Arms 4100
58 Alliant Steel
59 NORMA R123
60 VihtaVuori N110
61 Hodgdon LIL'GUN
62 Hodgdon H110
63 Winchester 296
64 IMR, Co IMR 4227
65 Hodgdon H4227
66 IMR, Co SR 4759
67 Accurate Arms 5744
68 Accurate Arms 1680
69 NORMA 200
70 Alliant Reloder 7
71 IMR, Co IMR 4198
72 Hodgdon H4198
73 VihtaVuori N120
74 Hodgdon H322
75 Accurate Arms 2015BR
76 Alliant Reloder 10X
77 VihtaVuori N130
78 IMR, Co IMR 3031
79 VihtaVuori N133
80 Hodgdon BENCHMARK
81 Hodgdon H335
82 Ramshot X-Terminator
83 Accurate Arms 2230
84 Accurate Arms 2460s
85 IMR, Co IMR 8208 XBR
86 Ramshot TAC
87 Hodgdon H4895
88 VihtaVuori N530
89 IMR, Co IMR 4895
90 VihtaVuori N135
91 Alliant Reloder 12
92 Accurate Arms 2495BR
93 IMR, Co IMR 4064
94 NORMA 202
95 Accurate Arms 4064
96 Accurate Arms 2520
97 Alliant Reloder 15
98 VihtaVuori N140
99 Hodgdon VARGET
100 IMR, Co IMR 4320
101 Winchester 748
102 Hodgdon BL-C(2)
103 Hodgdon LEVEREVOLUTION
104 Hodgdon H380
105 IMR, Co IMR 4007 SSC
106 Ramshot Big Game
107 VihtaVuori H540
108 Winchester 760
109 Hodgdon H414
110 VihtaVuori N150
111 Accurate Arms 2700
112 IMR, Co IMR 4350
113 Hodgdon H4350
114 Alliant Reloder 17
115 Accurate Arms 4350
116 NORMA 204
117 Hodgdon HYBRID 100V
118 VihtaVuori N550
119 Alliant Reloder 19
120 IMR, Co IMR 4831
121 Ramshot Hunter
122 Accurate Arms 3100
123 VihtaVuori N160
124 Hodgdon H4831 & H4831SC
125 Hodgdon SUPERFORMANCE
126 Winchester Supreme 780
127 NORMA MRP
128 Alliant Reloder 22
129 VihtaVuori N560
130 VihtaVuori N165
131 IMR, Co IMR 7828
132 Alliant Reloder 25
133 VihtaVuori N170
134 Accurate Arms Magpro
135 Hodgdon H1000
136 Ramshot Magnum
137 Hodgdon RETUMBO
138 VihtaVuori N570
139 Accurate Arms 8700
140 Hodgdon H870
141 VihtaVuori 24N41
142 Hodgdon H50BMG
143 Hodgdon US869
144 VihtaVuori 20N29
“The standard you walk past is the standard you accept.”

Lieutenant General David Morrison

I plink, therefore I shoot.
25Pdr

Re: 357 mag-how hot?

#5 Post by 25Pdr »

I cast Lee 158Gr 357 Boolits from Range lead and using Lee Liquid Allox Lube, I find that 14Gr of 2400 will heavily lead the barrel of a Marlin L/A.

Here's a Relative Powder Burn Rate Chart that includes Vectan. :)

http://www.reloadbench.com/burn.html
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Re: 357 mag-how hot?

#6 Post by Sandgroper »

25Pdr wrote:I cast Lee 158Gr 357 Boolits from Range lead and using Lee Liquid Allox Lube, I find that 14Gr of 2400 will heavily lead the barrel of a Marlin L/A.

Here's a Relative Powder Burn Rate Chart that includes Vectan. :)

http://www.reloadbench.com/burn.html
I see your Burn Rate Chart and raise you another! :lol:
“The standard you walk past is the standard you accept.”

Lieutenant General David Morrison

I plink, therefore I shoot.
25Pdr

Re: 357 mag-how hot?

#7 Post by 25Pdr »

Sandgroper wrote:
25Pdr wrote:I cast Lee 158Gr 357 Boolits from Range lead and using Lee Liquid Allox Lube, I find that 14Gr of 2400 will heavily lead the barrel of a Marlin L/A.

Here's a Relative Powder Burn Rate Chart that includes Vectan. :)

http://www.reloadbench.com/burn.html
I see your Burn Rate Chart and raise you another! :lol:
Image :lol: :lol:
Steve

Re: 357 mag-how hot?

#8 Post by Steve »

dodgyrog wrote:The boolits are quite hard so will take 'a kicking' and the lube should be up to it as well.
Let me know how you get on.
I'd also try Viht 340 and 3N37 as well.
Tried them today Roger and they performed well with hot loads.

Started off with 13.9grns of Alliant 2400 then 14.5,15,15.5 and tried 10 grains of Vectan A1 to see what this was like when stoked up.

My barrel wasnt leaded up after 50 rounds so they're plenty hard enough and the most promising loads for grouping was 13.9 and 14.5.The 15.5grns rounds were giving off a noticable increase in smoke,but i guess thats normal.
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Re: 357 mag-how hot?

#9 Post by dodgyrog »

25Pdr wrote:I cast Lee 158Gr 357 Boolits from Range lead and using Lee Liquid Allox Lube, I find that 14Gr of 2400 will heavily lead the barrel of a Marlin L/A.

Here's a Relative Powder Burn Rate Chart that includes Vectan. :)

http://www.reloadbench.com/burn.html
Crap lube has that effect. Use a proper lube and prevent the leading!
Purveyor of fine cast boolits.
All round good guy and VERY grumpy old man.
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dodgyrog
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Re: 357 mag-how hot?

#10 Post by dodgyrog »

Steve wrote:
dodgyrog wrote:The boolits are quite hard so will take 'a kicking' and the lube should be up to it as well.
Let me know how you get on.
I'd also try Viht 340 and 3N37 as well.
Tried them today Roger and they performed well with hot loads.

Started off with 13.9grns of Alliant 2400 then 14.5,15,15.5 and tried 10 grains of Vectan A1 to see what this was like when stoked up.

My barrel wasnt leaded up after 50 rounds so they're plenty hard enough and the most promising loads for grouping was 13.9 and 14.5.The 15.5grns rounds were giving off a noticable increase in smoke,but i guess thats normal.
It's not the hardness so much as the lube - you will see I make my own (secret recipe)! I'm delighted with your success, well done.
Purveyor of fine cast boolits.
All round good guy and VERY grumpy old man.
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