I'm interested in Low Flash, good metering, 230gr. JHP in .45 ACP with pressure well within safe margins. I've come to the conclusion that this is a rather tall order. It dawned on me that I could purchase .45 Super brass and develop a 900 fps load using a fast spherical/ball powder such as Tightgroup, or AA#2. I mention these two powders because they have low flash and good metering. I'm not sure how clean they would be, or if they might suffer pressure spikes with heavy loads in the smaller capacity Super brass. Anyone have an interest in such a project? Any experience with such a load?