The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Guns, Politics, Gunsmithing & Reloading Your Favorite Loads - Share Them With Us 338 Lapua ImprovedGo | New | Find | Notify | Tools | Reply | |
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100 grains Retumbo 300 grain SMK seated .01" off lands 3025 fps from 32" barrel. Nice mild load  Love shooting precision and long range. Big bores too! Recent college grad, started a company called MK Machining where I'm developing a bullpup rifle chassis system.  | ||
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What is the difference between the regular 338LM and the 338 improved? I use 85GR of Viht. N-165 with a sierra 250MK in a Lapua case. This works great for me in a 27 ½ barrel. I don’t know how fast it is going because I don’t have a chronograph, but it seems to be the most accurate load so far. | |||
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The case is blown out for a 15ish grain capacity increase..leading to more speed! Love shooting precision and long range. Big bores too! Recent college grad, started a company called MK Machining where I'm developing a bullpup rifle chassis system. | |||
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My 338 Lapua Imp. prefers 110.0 gr. US869 under the 300 SMK. I have loaded up to 112.5 of the same powder but the former amount provides better accuracy in my rifle.. | |||
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