Shutter85
Shutter85
1 post
Joined May 2014

243 rifle powder charge

I'm building 243 and the power charge changes every pull does not stay with in spec. Press is using rifle charge bar. I'm using IMR 4350 powder. Anyone help would be greatly appreciated.
dillon
Administrator
dillon
3,043 posts
Joined July 2007

RE: 243 rifle powder charge

This is due to trying to pour a large-grain extruded powder through a small hole. The powder will log-jam in the funnel. It helps to slow your downstroke speed, so it takes at least one full second to move the powder bar from one side to another. Some customers have taped an aquarium pump to the hopper to vibrate it, but the best solution is to switch to a ball or short-grained extruded powder.