powder and exposure to air

[nilebartram]

so should I throw the powder out ?

 

[barefooter56]

Are loaded rounds airtight?

Not unless you use a " cartridge sealing product" around the inside of the case neck and the primer pocket.

 

[cmysix]

I'm shooting primers and powder from the 60's labradar says it's good put bullets in it and shoot it, OMG!

 

[Ned Ludd]

so should I throw the powder out ?

No. I doubt you have anything to worry about with these rounds after seating bullets. Further, this is a perfect opportunity to find out what happens when powder is left in brass for 5 days covered up, but without seating bullets. I would personally just shoot them over a chronograph and see what happens. Then you will know. If the chronograph doesn't indicate anything out of the ordinary in velocity/pressure for the first couple-three shots, I'd just keep shooting. I'd be very surprised if you observe results that would be considered way outside the norm for this load.

 

[M-61]

Then I caught my wife's cold and did not seat the bullets.

Assuming your wife’s cold didn’t strike you in minutes, I’ll say I never start to reload unless I know I can complete the job.
If I don’t feel well or don’t have time to finish or just don’t feel like it, I don’t start.
Granted I’m never in a rush and the most I reload at any one time is max 50 rounds.

 

[6.5 forever]

I'll bet if you load and shoot them, you won't see much difference on target.

 

[JFrank]

My powder bottles get opened and closed in all types of climates. I place powder charges in vials that sit on the shelf for long periods of time before loading. I know other guys that leave powder in throwers for extended periods of time with no I’ll effects.
Personally I don’t see any difference on paper.

 

[Ccrider]

I leave powder in my throwers for short range and long range. I have seen no effect on paper.

Throw and load 5 new charges along with five of the charges you left out. Shoot both groups and see if they shout differently.