Let's not loose sight of what the OP's entire premise is here. He is suggesting different powders to use for TRAINING LOADS. If the loads he posted are SLIGHTLY backed off from I suspect pressures would rapidly drop and cheaper TRAINING loads would be very viable. Even if you only achieve around 950 fps (a 90 fps drop) I would still feel these are very viable TRAINING loads while using safer pressures. Carry the BB's for SD, practice with hand-loads and I doubt there would be a game changing perceptible difference for these purposes. YMMV!