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The Dillon lube is lanolin and alcohol (which evaporates off), not petroleum based. It should not hurt the powder.
BUT you MUST remove the lube from the case before firing! The brass is supposed to expand and grip the chamber walls, sealing the chamber. If the case is lubed, it will not grip the chamber and all rearward force from firing will be applied to the bolt head. This can cause extremely high pressure at the bolt head, possibly resulting in an exciting episode when you fire your gun.
Gen. Hatcher did some interesting work with this. Check out "Hatcher's Notebook", it is a very interesting read.
BUT you MUST remove the lube from the case before firing! The brass is supposed to expand and grip the chamber walls, sealing the chamber. If the case is lubed, it will not grip the chamber and all rearward force from firing will be applied to the bolt head. This can cause extremely high pressure at the bolt head, possibly resulting in an exciting episode when you fire your gun.
Gen. Hatcher did some interesting work with this. Check out "Hatcher's Notebook", it is a very interesting read.
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