Thats honking, how long was the barrel?
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I was playing around with a friends tikka 270 with 22” barrel using the 145eldx and 2209 these were the speeds I wrote down at the time. Measured with an old school chrony about 3m from muzzle. Loads look a little casual compared to what you are after but some info none the less.
Length 2.707” with hornady bullet comparator (27)
48 gr
2608
2603
2632
Es: 29
48.5gr
2676
2639
2624
Es: 52
49.0gr
2708
2654
2651
Es: 46
49.5gr
2679
2665
2648
Es: 31
Oal 2.692” (also 49.5gr I think)
2687
2664
2662
50.0gr
2753
2800
Err
Err
Err
Es:47
Final load: 2.707” length. 49.5 gr of 2209 with ELDX 145gr, hornady brass and white river primers.
My load with the 145 gr ELDX is 57 grs Superformance, giving me just over 3000fps out of a Tikka T3 in a 21inch barrel. This load I consider max as the powder is temp sensitive and should the rounds warm up in a hot vehicle say they could be interesting. Treat with caution.