Scanned through the topic and might have missed this but, if I did, it won't hurt to reiterate.
Some powders have the same number or similar names. BE SURE you pick the right powder from the book. H4895 is not IMR4895 (close but not the same). Clay's is not Universal Clays nor is it International Clay's. They are 3 different powders with different burning characteristics. 8208M is not 8208XBR. There are many other examples, but you get the idea.
