Considering working up a load with this powder for 308. Interesting that I haven't found any recipes on line at the Winchester site or other places. Is the burn rate too fast for heavier cartridges? Advice? Unsafe?
It's not unsafe, just not very efficient since it builds up pressure too fast to really use enough powder to get things going in normal-length barrels. (For that very reason, however, it is useful for SOCOM-like carbines.)
Case in point:
Using a standard 24" barrel, a 150-FMJ and a 55,000psi pressure limit, RL-17 gives you a full case, decent burn, and 2,900fps
Using IMR4198 you can only get 2,750fps before busting that pressure limit.
When you can't find load data for a caliber/powder combination especially from the powder manufacturer there's usually a very good reason. It's only dangerous if you ignore the pressure limits and load too "hot" for the caliber.
The exception being w/ a short barrel and light bullets. I am using it w/ my 20" barreled Scout and 110gr. V-max for coyotes. Am getting close to 3000fps.
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