Thread: Forbes 280AI Load Development

I would suggest that if intending to load the 162gr for 60kPSI peak or over - as seems to be the practice in the endless quest to equal 7mmRM performance - then 2213sc may be the limit for burn rate as the case is not large enough for the slower ADI powders to generate this figure. N560 has also produced top velocities for me, followed by Re-22, but I wouldn't be dogmatic with any claim about best accuracy and in the 280AI prefer the ADI single-base powders in this regard along with the added benefit of better temperature stability.