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Rifles, Reloading, Optics, Equipment
Reloading
257 Weatherby and Retumbo ?
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<blockquote data-quote="AZShooter" data-source="post: 1202011" data-attributes="member: 5219"><p>I know you want information on retumbo which I have not tried with my 257 weatherby.</p><p></p><p>Seeing others are mentioning different powders I'll add some more. You might want to try RL-25 or my new favorite RL-33</p><p></p><p>Three of my friends and I used RL-25 with 115 bergers. I had to switch to 110 accubonds because my 3 groove lilja became so worn it would destroy the thin jacketed berger bullets. </p><p></p><p>This is from my notes:</p><p></p><p>257 Weatherby: custom reamer with 100 thousandths jump to lands, 28" #5 fluted SS Lilja 3 groove barrel, moly coated 110 accubond, .015" off rifling.</p><p></p><p>Original load 75.5 gr of RL-25 vel 3615 fps</p><p></p><p>RL-33:</p><p> </p><p>80 gr 3432 fps</p><p>81 gr 3525</p><p>82 gr 3559</p><p>83 3625 which slightly faster than old load with RL-25</p><p>83.5 3674 fps shot well CURRENTLY USING THIS LOAD</p><p>84 gr 3704 fps shot well </p><p>84.5 gr 3735 slight signs of pressure on one case of four this is max case capacity with drop tube</p></blockquote><p></p>
[QUOTE="AZShooter, post: 1202011, member: 5219"] I know you want information on retumbo which I have not tried with my 257 weatherby. Seeing others are mentioning different powders I'll add some more. You might want to try RL-25 or my new favorite RL-33 Three of my friends and I used RL-25 with 115 bergers. I had to switch to 110 accubonds because my 3 groove lilja became so worn it would destroy the thin jacketed berger bullets. This is from my notes: 257 Weatherby: custom reamer with 100 thousandths jump to lands, 28" #5 fluted SS Lilja 3 groove barrel, moly coated 110 accubond, .015" off rifling. Original load 75.5 gr of RL-25 vel 3615 fps RL-33: 80 gr 3432 fps 81 gr 3525 82 gr 3559 83 3625 which slightly faster than old load with RL-25 83.5 3674 fps shot well CURRENTLY USING THIS LOAD 84 gr 3704 fps shot well 84.5 gr 3735 slight signs of pressure on one case of four this is max case capacity with drop tube [/QUOTE]
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257 Weatherby and Retumbo ?
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