Powder Ignition Failure

[bombdoc]

Folks, I have been encountering a number of failures of Vithavouri N140 powder to ignite.

I am aware of a number of incidents where this has happened with several 7.62x54R rifles and more recently with an 8mm Lebel.

The cases are normal ball loadings with a standard primer. What happens is that the primer fires, but the powder does not ignite. The bullet is driven into the rifling and the powder is left in a caked lump in the chamber and case. The powder which is normally grey takes on a yellow colour.

I have tried changing the powder and primer batches, but I keep getting incidents of this failure.

The Lebel I have has a fairly worn bore and the dies and bullet I am using (.323 mauser) is not a tight fit in the case. I am beginning to suspect that the primer is just blowing the bullet and powder down into the bore before it ignites..

Any thoughts...?

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