Just so its been said, be very careful downloading below any powder manufacturers published minimums. All kinds of crazy anomolys can cause pressure spikes. These include bullets that start then lodge in the lands
and then the powder fully ignites behind them causing overpressure. Powder inside the case burning with more surface area top to bottom instead of in a column rear to front causing over pressure. Bullets lodging in the lands causing obstructions, hang fires where the primer is struck then 1,2,3 KABOOM whenever it gets ready to , And other crazy conditions that may not be readily forseeable, anticipated or even make sense to by the average reloader.
Published minimums arent just lawyer speak but are most often based on actual science and known hazards.
Stay safe