I wanted CFE also.
I have been using regular SRP for all 223 powders including H335.
So, I don't think 844 will need them. I really like the H335 and AA Data 2230-C, meter well and are just the right speed, and seem easy to ignite. But these Ball powders are temperature sensetive, so I can't hunt Polar Bear in Antartica. I did order #41's, but more so because I load for semi-autos.
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