OK, the powders we buy in canisters (canister grade) is a powder produced by blending different lots of that powder (all of which have slightly different burning rates) to produce the burning rate specified by the maker for that particular canister/consumer powder. This is very similar to the process of making blended alcoholic beverages. It's also why you should be somewhat cautious when trying a new lot of any powder as the burning rates can still vary somewhat.
Non-canister grade powders are what the arsenals/large ammo makers use. This arrives at the plants in barrels. Each barrel must be tested for burning rate and loading data computed from that burning rate. As a result, the WXYZ powder used by ammo companies isn't the same as the WXYZ powder consumers buy. How great the differences between the powders are is usually unknown and may not include special additives like flash suppressants.
A second point is that for large orders (and where someone else is assuming liability), powder companies are willing to cook up special powders that may or may not ever reach the consumers. (A brief note: I've got a lot of XM118LR ammo that's allegedly loaded with a powder I'd never heard of.) Recently, there have been a variety of new powders introduced that were probably produced in this way. However, what we get is still a canister grade version that may not include things like flash suppressing chemicals.
It's very helpful to know exactly what you're trying to accomplish. A different powder would seem to be the best way to try to accomplish this. Have you actually tested how well ball ammo matches the pre-calculated reticule and/or chrono'd the various ammos?
Over decades I've tried a few of those magic reticules and found that they are, at best, a ball park approximation of where a specific bullet is going to be. That's also going to vary by altitude, barometric pressure, humidity and temperature (combination referred to as density altitude). As a result the ball park can be of impressive size. You may find that matching a calculated trajectory is difficult/impossible. A mil-dot reticule would be more work to learn but is more flexible than any BDC. Neither is really necessary for the .223/5.56 mm.
