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Rifles, Reloading, Optics, Equipment
Reloading
Load Data - 340 WBY
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<blockquote data-quote="Long Time Long Ranger" data-source="post: 673424" data-attributes="member: 505"><p>If you have 7828 that is a very good powder for the 340. Start with 85 grains with the 265 and work up. There will be about two grains difference between the 265 and the 285. A max load of 7828 should get you 2850 fps with the 265 grain. A slower powder like H-1000 would work better with the 285 grain but 7828 will do OK if that is what you have. Your max velocities should run about 125 fps slower than the 338-300 RUM. The 340 wby is a serious long range rifle that I have shot quite a bit for over 35 years.</p><p> </p><p>Lefty, the 340 wby is far more rifle than your 338 winchester and requires much slower powders for best performance. RE-19 with 225 grain bullets in the 338 winchester at around 2900 fps is a very good max load for that cartridge. 4350 and 4831 are also good and will give you similar results. RE-19 is as slow as you can go with best loads in the 338 winchester and bullets in that weight range. That is where all my 338 winchesters shoot with best loads. By comparison my 340 wby's will all shoot the 225 grain bullets over 3100 fps with the slower burning powders far more effective.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 673424, member: 505"] If you have 7828 that is a very good powder for the 340. Start with 85 grains with the 265 and work up. There will be about two grains difference between the 265 and the 285. A max load of 7828 should get you 2850 fps with the 265 grain. A slower powder like H-1000 would work better with the 285 grain but 7828 will do OK if that is what you have. Your max velocities should run about 125 fps slower than the 338-300 RUM. The 340 wby is a serious long range rifle that I have shot quite a bit for over 35 years. Lefty, the 340 wby is far more rifle than your 338 winchester and requires much slower powders for best performance. RE-19 with 225 grain bullets in the 338 winchester at around 2900 fps is a very good max load for that cartridge. 4350 and 4831 are also good and will give you similar results. RE-19 is as slow as you can go with best loads in the 338 winchester and bullets in that weight range. That is where all my 338 winchesters shoot with best loads. By comparison my 340 wby's will all shoot the 225 grain bullets over 3100 fps with the slower burning powders far more effective. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Load Data - 340 WBY
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