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Rifles, Reloading, Optics, Equipment
Reloading
Temperature Sensitivity/Insensitivity
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<blockquote data-quote="RuffHewn" data-source="post: 112758" data-attributes="member: 1358"><p>Do a search on the DoD development of the A191 ctg, basically a .300WM firing a SMK190 about 3000 fps. There is good info on RL22 and several other powders. At the conclusion of the tests RL22 was the powder selected.</p><p></p><p>I use 68.5 gr RL22 with my molyed SMK190 load in my .300WSM and was completely satisfied with temp stability till temps were above 100-105 deg. From 25 to near 90 deg RL22 compares very well with the H4350 I use for the Hornady 178gr moly A-Max.</p><p></p><p>VVN 560 is another powder that is likely to be suggested and I found it to be very good from late fall to early spring but as temps rise above 60 - 70 deg I began to like it less and less.</p></blockquote><p></p>
[QUOTE="RuffHewn, post: 112758, member: 1358"] Do a search on the DoD development of the A191 ctg, basically a .300WM firing a SMK190 about 3000 fps. There is good info on RL22 and several other powders. At the conclusion of the tests RL22 was the powder selected. I use 68.5 gr RL22 with my molyed SMK190 load in my .300WSM and was completely satisfied with temp stability till temps were above 100-105 deg. From 25 to near 90 deg RL22 compares very well with the H4350 I use for the Hornady 178gr moly A-Max. VVN 560 is another powder that is likely to be suggested and I found it to be very good from late fall to early spring but as temps rise above 60 - 70 deg I began to like it less and less. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Temperature Sensitivity/Insensitivity
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