Powder Ignition Failure

[bob q]

Some powders will do this in military rifles . It is caused by several factors , the more of the factors you have , the more likely it is to happen . 1. A bullet too small for the bore , 2. an oversized chamber for the case being used [ or the case is too small ] , 3. too much neck clearance in the chamber , 4. cooler weather , 5. the powder used [ I-3031 is one of the worst ] , 6. too light of a charge . You probably have all of those listed . It is NOT the primer or crimp.

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[browningautorifle]

5. the powder used [ I-3031 is one of the worst

You didn't read what he wrote did you?

[bob q]

You didn't read what he wrote did you?

You did not understand what I wrote . A list of things that cause the problem . #5 was the powder used [ an added note that I-3031 is a powder that has that problem the worst of the six or so powders that have that problem ] .