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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 norma reloading data
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<blockquote data-quote="Rimfire" data-source="post: 732691" data-attributes="member: 8839"><p>Speed be careful using 338 Lapua data as a reference, although the Norma is based off the same case it responds different with the usual powders for some reason.</p><p> </p><p>The reason you don't see much info for the 250's is because the cartridge is designed aroun the 300 grain SMK. During development and testing R-22 and Ramshot Magnum were the go to powders for FPS and accuracy with top FPS going to RSM </p><p> </p><p>My first one shot R-22 better and my second one shoots RSM @ 2800 FPS in the .3's consistently so I left it and just shoot it.</p><p> </p><p>I tried all the usuals H-1000, Retumbo etc. great accuracy but FPS was slower than 22 and RSM. </p><p> </p><p>PM if you are interested in loads for the 300's</p></blockquote><p></p>
[QUOTE="Rimfire, post: 732691, member: 8839"] Speed be careful using 338 Lapua data as a reference, although the Norma is based off the same case it responds different with the usual powders for some reason. The reason you don't see much info for the 250's is because the cartridge is designed aroun the 300 grain SMK. During development and testing R-22 and Ramshot Magnum were the go to powders for FPS and accuracy with top FPS going to RSM My first one shot R-22 better and my second one shoots RSM @ 2800 FPS in the .3's consistently so I left it and just shoot it. I tried all the usuals H-1000, Retumbo etc. great accuracy but FPS was slower than 22 and RSM. PM if you are interested in loads for the 300's [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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338 norma reloading data
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