2209. I don't have a std Swede rather one on steroids (AI).
I use WW760 but did do initial loads using 2209. My research at the time said 2209 was the go to for the std version.
I use WW760 in the Ackley to try and extend barrel life. WW760 has a lower flame temperature.
I use Sierra 142gr MK moly coated projectiles. This is the last of my rifles that I'll feed with molyed projectiles. Too much stuffing around.
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