Please note that I'm neither defending nor predicting what Alliant might do. I merely pointed out something that they once did (with the reasoning they gave me for it) then offering an observation that I'd not be surprised if they followed that pattern again.
It is a fact that 19 and 22 are quite close together in burn rate, closer together than any other pairing in their line. What that means (if anything) to the marketers and technicians at Alliant is not something I can guess about.
the closeness of the two I cannot say, however the RL19 shoots very well in my 300WSM, while RL22 has not been so succesful,and RL22 shoots very well in my .270 but I have not had as much luck with RL19 there...I really would hate to have to develop the 300WSM loads again.
