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Joined: Jan 2010
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Mosby Offline OP
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Doing some preliminary research on my next reloading project, the 340 Weatherby. Going through reloading manuals I was expecting to see very slow burning powders such as RL-22 and H1000. I was surprised to see 4350 and 4831. The rifle is an Accumark and has shown preference in the past for 250gr. factory loads over 225 grain loads, so I'll be starting with 250's. Thought I'd ask here for suggestions as well.

Thanks in advance.

HR IC

Joined: May 2005
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Enjoy. It is awonderful cartridge.

.340 Weatherby Magnum

Bullet Load Powder O. A. L. Velocity Energy Comments

175 gn Barnes X 93gn H 4831 3.635" 3138 Original Surplus
93gn WMR 3034
93gn H 4831 3241 Mulwex Manufactured (Hogdon)
94gn H 4831 3281 Mulwex Manufactured (Hogdon)
95gn H 4831 3.641" 3307 Mulwex Manufactured (Hogdon)
92gn H 4350 3.603" 3364
85gn 760 3280
87gn 760 3310
85gn IMR 4350 3158
87gn IMR 4350 3290

185 gn Barnes TSX 83gn 760 3.665" 3150 Mild
84gn 760 3162
92gn Rel 22 3252
93gn Rel 22 3268
94gn Rel 22 3310 4501
95gn** Rel 22 3372 4672 .517" Best Accuracy (2 touching-seat deeper)
87gn H 4350 3161 4106 Mild
89gn H 4350 3252 4344

200gn Speer 93gn H 4831 3092
91gn Rel 19 3092
93gn Rel 22 3173 4472 MOA. Best load this bullet
63gn* AR 2206 2656 3134 H 4895 Equivalent - Reduced Load
65gn* AR 2206 2722 H 4895 Equivalent - Reduced Load

200 gn Barnes X 90gn Rel 22 3218 26" Tobler barrel/Rem 700 action

210 gn Partition 90gn Rel 19 3124 4552
91gn H 4831 3010 4256 Original Surplus
93gn H 4831 3.621" 3116 4529 .7 MOA
93gn WMR 3104 4494

225 gn Speer BT 91gn H 4831 2981 4441 Original Surplus

225 gn Hornady 90gn Rel 22 3088 4765 ,7 MOA 3 shots
92gn Rel 22 3101 4806
91gn H 4831 3012 4537 Original Surplus
93gn H 4831 3042 4624
89gn Rel 19 3030 4588 1.5 MOA
90gn Rel 19 3121 4868

225 gn Woodleigh 90gn WMR 3.553" 2925
91gn WMR 2981
92gn WMR 3.585" 3037 Warm Load
90gn Rel 22 3042 Good Load - Seat out 1/2 turn
93gn Rel 22 3238 5240

.340 Weatherby Magnum Page 2.

Bullet Load Powder O. A. L. Velocity Energy Comments

225 gn Barnes TSX 90gn Rel 22 3.679" 3049 4648
91gn Rel 22 3086 4681
92gn** Rel 22 3100 4809 .908" Best Accuracy
92gn Rel 25 2865 Mild
94gn Rel 25

225gn Barnes TTSX 91gn Rel 22 2924 Mild
94gn Rel 25 2904 Mild
95gn Rel 25
89gn H 4831sc 2720 Very Mild


230 gn Fail Safe 91gn WMR 3.674" 2965 4341
89gn Rel 22 2994
90gn Rel 22 3025 1.5 MOA

250 gn Hornady 86gn Rel 19 2861
87gn Rel 19 2903
88gn Rel 22 2917 4726
88gn H 4831 2839 Original Surplus
89gn H 4831 2870 4574 MOA 3 shots
88gn WMR 2910

250 gn Partition 88gn Rel 22 2921 4738
89gn H 4831 2895 4658 MOA Best Accuracy
89gn WMR 2927 4756

250 gn Swift Sirocco 88gn WMR 2908

250 gn Grand Slam 88gn Rel 22 2902 4678
88gn WMR 3.602" 2889 4634

250 gn Woodleigh 88gn WMR 3.553" 2852
89gn WMR 2925 .7 MOA load
90gn WMR 2941 4803
87gn** Rel 22 2907 4692 Best load this bullet
88gn Rel 22 3.659" 3005 5014

275 gn Speer 87gn H 4831 2742 4591 .7 MOA Load
86gn WMR 3.598" 2812 4829

300 gn Woodleigh 83gn** Rel 22 3.541" 2684 4800 Same POI as 185/225 TSX & 250 Wood

* Denotes reduced loads using Mulwex AR 2206 ( H-4895) and Fed 210 Primers
** These 4 bullet/load combo's shoot to the same point of impact. (Interchangeable loads)




JW


When truth is ignored, it does not change an untruth from remaining a lie.
Joined: Apr 2001
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I've been a 340 nut off and on for some time. With the 250's I'd try R22, R25, 7828 and H4831.

Toss in a 250 Horn or Nozler and you're golden!

Dober


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