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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 Remington Ultra Mag load data desired
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<blockquote data-quote="Totoro" data-source="post: 21001" data-attributes="member: 740"><p>Dave</p><p></p><p>May I suggest using IMR7828 with the heavier bullets? My rifle is similar to yours with only a 1/2" difference in barrel length and most likely overall rifle weight (mine weighs 9.6lbs total). I shoot almost exclusively the 250gr MK loading 94gr IMR 7828 at approx 3075fps. I don't recall if 7828 has a slower burn rate than RL25 but the velocity SD for the rifle is around 10fps using 7828 while SD ~27fps using RL25. Trying Hodgon BigShot next since some of my 50cal shooters have had great success with that powder.</p><p></p><p>Good Luck </p><p></p><p>Verrocchio</p></blockquote><p></p>
[QUOTE="Totoro, post: 21001, member: 740"] Dave May I suggest using IMR7828 with the heavier bullets? My rifle is similar to yours with only a 1/2" difference in barrel length and most likely overall rifle weight (mine weighs 9.6lbs total). I shoot almost exclusively the 250gr MK loading 94gr IMR 7828 at approx 3075fps. I don't recall if 7828 has a slower burn rate than RL25 but the velocity SD for the rifle is around 10fps using 7828 while SD ~27fps using RL25. Trying Hodgon BigShot next since some of my 50cal shooters have had great success with that powder. Good Luck Verrocchio [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 Remington Ultra Mag load data desired
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