Powder for 300RUM?

G'day all,
Would like a recommendation on powder for my new RUM.
I have Retumbo, H1000 and RE25 in the appropriate burn rate. Also have H50BMG but little data out there.
I'm going to run 200g Accubonds for starters, seeing as though I have several hundred and I know they work well in cases like the Weatherby.
I'm thinking RE25 will probably be up there for accuracy. As it always seems to be in all my other rounds I use it in, but between H1000 and Retumbo, what do you all think will work best?

Cheers.
Mine likes retumbo
 
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