[KoKodog]

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



http://www.reloadbench.com/burn.html

http://www.hodgdon.com/burn-rate.html

http://home.hiwaay.net/~stargate/powder/powder.htm

http://www.ramshot.com/powders/burnrate.php

http://www.reloadersnest.com/burnrates.asp

http://www.gswagner.com/bigreloading...rburnrate.html

https://www.grafs.com/uploads/techni...df-file/14.pdf