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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
340 WBY real potential and questions?
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<blockquote data-quote="DMP25-06" data-source="post: 706010" data-attributes="member: 27271"><p><strong><span style="font-size: 9px">I hope that my attached file shows up on this post .This is a page from NORMA POWDERS reloading data from 6 -8 years ago . Notice in the listing for .340 WM , 250 gr. Woodleigh softnose shows a starting load of 86.1 gr. @2821 fps , up to 90.0 gr.@2986fps , using Norma MRP powder , Federal 215 primer , and Norma brass [ Weatherby brass is made by Norma ] .</span></strong></p><p></p><p><strong><span style="font-size: 9px">I substituted a Sierra Gameking 250 gr. Softpoint Boat-Tail bullet , with a B.C. of .565 , in place of the Woodleigh softpoint . I load 88.2 gr. of MRP , Fed.215 , Weatherby brass , in my Weatherby Mark V , 26" barrel by Douglas Premium with factory freebore , with an average velocity of 3030 fps [ chronographed by Pact and Chrony ], ES is 35-40 , accuracy is sub-MOA. Cycling of action to remove brass is smooth and easy , no cratered primers . </span></strong></p><p><strong><span style="font-size: 9px">Shooting at an elevation of 8500' , temperature of 60 deg. F. , scope zero range of 200 yd. , I added 67.5 MOA to hit a rock of approximately 40" , at a distance of 1900 yards [ as shown on Google Earth ]. remaining velocity at impact showed to be about 700 fps , according to my computer print-out .</span></strong></p><p></p><p><strong><span style="font-size: 9px">I can't find other powders that generate as much velocity as Norma MRP , without extreme over-pressure . However , Norma MRP is in very short supply here in the USA.</span></strong></p><p></p><p><strong><span style="font-size: 9px">I hope that this information helps , this loading is a workable combination in my rifle , however , it might be too hot in your rifle , so begin at a lower volume and work up slowly .</span></strong></p></blockquote><p></p>
[QUOTE="DMP25-06, post: 706010, member: 27271"] [B][SIZE=1]I hope that my attached file shows up on this post .This is a page from NORMA POWDERS reloading data from 6 -8 years ago . Notice in the listing for .340 WM , 250 gr. Woodleigh softnose shows a starting load of 86.1 gr. @2821 fps , up to 90.0 gr.@2986fps , using Norma MRP powder , Federal 215 primer , and Norma brass [ Weatherby brass is made by Norma ] .[/SIZE][/B] [B][SIZE=1]I substituted a Sierra Gameking 250 gr. Softpoint Boat-Tail bullet , with a B.C. of .565 , in place of the Woodleigh softpoint . I load 88.2 gr. of MRP , Fed.215 , Weatherby brass , in my Weatherby Mark V , 26" barrel by Douglas Premium with factory freebore , with an average velocity of 3030 fps [ chronographed by Pact and Chrony ], ES is 35-40 , accuracy is sub-MOA. Cycling of action to remove brass is smooth and easy , no cratered primers . [/SIZE][/B] [B][SIZE=1]Shooting at an elevation of 8500' , temperature of 60 deg. F. , scope zero range of 200 yd. , I added 67.5 MOA to hit a rock of approximately 40" , at a distance of 1900 yards [ as shown on Google Earth ]. remaining velocity at impact showed to be about 700 fps , according to my computer print-out .[/SIZE][/B] [B][SIZE=1]I can't find other powders that generate as much velocity as Norma MRP , without extreme over-pressure . However , Norma MRP is in very short supply here in the USA.[/SIZE][/B] [B][SIZE=1]I hope that this information helps , this loading is a workable combination in my rifle , however , it might be too hot in your rifle , so begin at a lower volume and work up slowly .[/SIZE][/B] [/QUOTE]
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340 WBY real potential and questions?
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