I gave this a bit of research and have to agree that 2.150" COL does make good sense with just over 7mm seating depth, enough to provide strength when impacting the feed ramp. This also increases the case capacities, just slightly. 20.2gn appears to be almost exactly 100% full and within a safe pressure threshold. It also increases the powder burnt percentage leading to a 'cleaner' load as well as more consistent results.
I would have to caution against anything at or above this until building up to these thresholds to factor variables like primer selection, neck pressure, rifle personalities and environmental intemperance.
The results look promising with a reduced jump to the lands and velocities around 2100 fps...results may vary, normal disclaimers apply.
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