fredj338
Member
There's a huge difference between using a powder that suitable for various bullets weights in a caliber and using a powder that has no published data for that caliber or anything similar.
I have a 135 grain 9mm lead bullet that has no published data, that I can find, yet I can make an educated guess at what a starting load should be based upon 124 and 147 grain data. But taking a powder with no published data and making a guess at a load is a whole another ballgame.
I guess the better question would be - If I take a charge of fast rifle powder, filled up to the base of a bullet what's the worst that can happen? Assuming the powder isn't compressed is there any way an high pressure spike can happen? I'm guessing the result would be erratic pressures on the low side and wild swings in velocity and accuracy, but that is just a guess.
Along that line of thinking. If I put a compressed load of 2400 into a 9mm, it might not even have enough pressure to cycle the action. That same thought process would drive my choice for wildcatting or going off book. Something like QuickLoads would be helpful in giving a direction on non manual powder choices. We are lucky here, we don't have to really experiment but in some countries, it is how they have to reload because they just don't have access to the powder choices we do.