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Old February 4, 2013, 03:12 PM   #6
chris in va
Senior Member
 
Join Date: December 26, 2004
Location: Louisville KY
Posts: 12,527
Quote:
.24.3gr of "SMP 842" Military Surplus gunpowder
Bingo.

Get a pound of 335 or something. Clearly the powder isn't igniting properly, leaving those 'yellow' flakes in the action.

BTW you are using a full length resizing die, correct? Some 223 dies only resize the case neck.
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