I have also been working on a Tikka 284, re-chambered from 7mm08. Mine is 18" barrel and I managed to get 162gr ELD-M's up to 2775 with 56gr of 2209 which is the only suitable powder I have right now. This load was giving stiff bolt lift and wipe marks . Unfortunately that load also put 3 shots into less than 0.5moa, which pissed me right off as dialed back a bit to sane pressures around 55.5gr, it was shooting around 0.8moa.
I'm trying to get a decent load that I can use until I get my hands on a more suitable powder. Was planning on RL17 but RL26 might be on the list also now.
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