The reason I ask this question is that nitroglycerin sublimates; it essentially evaporates if left to just sit there in an open container or a container that is re-opened a number of times. Some powders, including the VV N550 and VV N540 that I use, contain nitroglycerin. My understanding is that the extruded granules in these powders have some sort of sealer that may be there to help prevent the nitroglycerin from sublimating when the container is repeatedly opened. If the nitro sublimates, then muzzle velocity might be lost if the powder is not totally used within a period of time. Anyone know if this occurs?
Cassidy
Cassidy