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I use H4350 in mine but seeing that Alliant describes it as “well within the 4350 burn speed band”, I don’t see why it wouldn’t work. Let us know what’s your results are if you try it.
I haven't tired RL16 but have RL 17. RL17 gave impressive velocity but the H4350 was always more accurate so once I found a few good loads I stuck with that. It will be interesting to see RL16 results, keep us posted!