Has been a good read but coming from the Thermoplastics industry, I cant help but think that there would be some differences engineered into the similar powder caracteristics.
Take partical size for instance, this can be pre-determined in how much & what kind of suspending agents are used while the powder is still in the slurry form. Agitation, along with the number of blades and baffles are also important.
An intentional temperature change of just a few degrees can also change the caracteristics of the batch greatly along with how long it is kept on cycle.
Post additions are normal between the slurry makeup & the drying that can affect the product greatly depending on the caracteristics needed.
Finally, the mesh of the screen after drying can vary by as little as 20 threads per square inch and the proper screen is installed depending on the needs of the product.
That 296 and H110 appear to be very similar but in some calibers, the 296 loadings will call for No More Nor No Less than what the manual calls for.
In other calibers where dual usage is acceptable, it seems like the starting loads for the 296 are always lighter than the H110 by as much as 1.8gr with the velocitys being equal.
They do end up being the same amounts in grains and velocitys on the top end a lot of times, so to me,…this means that the bulk density of the two powders are different but may become insignificant after a certain weight in grains charged into the case is achieved.
If the bulk densitys are different, primers can make a big difference which brings us back around to what Stimpylu32 was saying.
In the end, I will rely on the loading manual to keep me on the safe side.
