Yep, have both 20 and 22 in 284s. In fact done two 20 in and load dev for both.
160 TMKs with Superformance giving 2830 - 2850 fps.
145 Speers w 2209 giving 2900+ fps
In 22 in bbl Tikka 2506 donor action Truflite 1:8.5 twist
162 AMAX with RL17 doing 2950 fps, 0.5 moa groups
160 TMKs with Superformance 2900 fps
150 ELDX w RL17 2995 fps
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