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Rifles, Reloading, Optics, Equipment
Reloading
7mm Rem Mag 7977
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<blockquote data-quote="Capt RB" data-source="post: 2029345" data-attributes="member: 85987"><p>Rl26 will get you close to 3000fps most likely closer to 3050. You will have a .2 mil/.68moa better wind drift at 650yds and 400#s of energy advantage @ 2900fps for both. In the testing that I have done the IMR powders 4955,7977 and 8133 in different applications all pressured out at 100-150fps slower than other powders with similar applications. 4955 in a creedmor would pressure out at 2690w/147's. Same rifle with Rl16,19 and 26 would run them over 2800fps in the same brass. 7977 in my brothers 7rem with the 162 is 150fps behind retumbo where it wants to shoot. I never saw 3000fps due to swipes and heavy bolt lift. 8133 in a 300rumI have done a work up on was 75fps behind at max and 130fps behind where it wanted to shoot. If you don't mind the lost of speed they are fine. I have 4#s of each at least with in case of emergency applications but I won't use it otherwise.</p><p> If a decoppering agent is a must for you. Tubb dust will do the same and you can add it to any powder.</p></blockquote><p></p>
[QUOTE="Capt RB, post: 2029345, member: 85987"] Rl26 will get you close to 3000fps most likely closer to 3050. You will have a .2 mil/.68moa better wind drift at 650yds and 400#s of energy advantage @ 2900fps for both. In the testing that I have done the IMR powders 4955,7977 and 8133 in different applications all pressured out at 100-150fps slower than other powders with similar applications. 4955 in a creedmor would pressure out at 2690w/147's. Same rifle with Rl16,19 and 26 would run them over 2800fps in the same brass. 7977 in my brothers 7rem with the 162 is 150fps behind retumbo where it wants to shoot. I never saw 3000fps due to swipes and heavy bolt lift. 8133 in a 300rumI have done a work up on was 75fps behind at max and 130fps behind where it wanted to shoot. If you don't mind the lost of speed they are fine. I have 4#s of each at least with in case of emergency applications but I won't use it otherwise. If a decoppering agent is a must for you. Tubb dust will do the same and you can add it to any powder. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
7mm Rem Mag 7977
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