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Long Range Hunting & Shooting
338 Allen Xpress, RL33 load development
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<blockquote data-quote="Fiftydriver" data-source="post: 856289" data-attributes="member: 10"><p>With your Lapua, are you pressuring out or are you running out of case capacity at these powder charge levels?</p><p> </p><p>Depending on your throat length, may just be a capacity issue where you can not take advantage of the slower powder simply because of lack of room. What you see with the 99.0 gr of RL33 vs 94.0 gr Retumbo with the SMK at the same velocity is about what I am seeing as well with that amount of spread for same velocity. Only that with Retumbo, I am pressured out and with RL33 still have a lot of room to increase.</p><p> </p><p>I am surpised your getting 94.0 gr of Retumbo in your Lapua with comfortable pressures. Seems a little high with the 300 gr SMK, with the Berger that would be on the top side of what I generally use but with the SMK and its longer baring surface, it tends to pressure out a bit sooner with Retumbo.</p><p> </p><p>Just curious what your load density is at 99.0 gr of RL33?</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 856289, member: 10"] With your Lapua, are you pressuring out or are you running out of case capacity at these powder charge levels? Depending on your throat length, may just be a capacity issue where you can not take advantage of the slower powder simply because of lack of room. What you see with the 99.0 gr of RL33 vs 94.0 gr Retumbo with the SMK at the same velocity is about what I am seeing as well with that amount of spread for same velocity. Only that with Retumbo, I am pressured out and with RL33 still have a lot of room to increase. I am surpised your getting 94.0 gr of Retumbo in your Lapua with comfortable pressures. Seems a little high with the 300 gr SMK, with the Berger that would be on the top side of what I generally use but with the SMK and its longer baring surface, it tends to pressure out a bit sooner with Retumbo. Just curious what your load density is at 99.0 gr of RL33? [/QUOTE]
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338 Allen Xpress, RL33 load development
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