Powder Ignition Failure

[browningautorifle]

So, you're not going to try a magnum primer...lightish is still not a full load? Reduced loads in some cartridges will produce this very thing. Two ways to do it. Full house load and see or a magnum primer and see. Otherwise you've wasted time here... You never did tell us what bullet weight. The scales I set above show minimum 44 gr start. So you're under this set of loads by quite a bit...for the smallest bullet they show using this powder.