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Old May 06, 2017, 12:32   #6
FALaholic #: 31665
Join Date: Sep 2007
Location: on top of a wind swept ridge
Posts: 6,053
quoted text from a post in the canister and surplus powder forum over at cast boolits

it does address a issue w/ updated powder formulas

Another hole created as of late is the movement of RL7, initially a 5 percent nitroglycerin content and now a 10 percenter. The speed of the initial version was a very fast 3031, and the current version is very close to 4198. That is a significant difference for the 30-30 capacity case. The advantage of the movement is that now RL7 can be used in the straight wall pistol cases, and is about 3 grains within WW680 which is going by the wayside

the charts found at the links help to get a idea of burn rate/speed, but for most reloaders they mean little
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that know neither victory, nor defeat.
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