powder storage/flask or rebottle?

[Turnup]

Flasks are not airtight, so there is the potential for moisture to leach into the powder. You might be lucky and have dry storage conditions, but why risk it? I always return unused powder to the bottle it came in - this also means that you never get mixed up about what powder you have in the flask. You might use only one powder today, but I am pretty confident that the time will come when you want to try something else, so now is the time to cultivate good habits.

[tim56]

As per Steve and Tac. Have never used a flask as don't like the idea of holding a pot of powder over a hot barrel. I use phials for revolver
and a bench mounted measure for .577 and single shot pistol. I never bothered emptying my containers at the end of a session as i use
the same powder each time and never noticed any loss of performance. Tim

[steviebee]

Cheers Guys, thanks for the advice and as normal safety first, so it's back to the drawing board and keep it simple.

[outfitter]

My problem is that if I leave powder in a flask for any period of time I'm likely to forget the grade of powder. Here in the States black powder comes in metal cans, is that the same as the bottles to which you all refer? I store these cans in metal ammo cans as a protection against flames but I'm mindful that they also create a hazard if the powder explodes. There is a reason why powder mills merely tack on the building's siding. When I owned and fired a civil war cannon (original 3" Ordnance Rifle) I left a goodly quantity of cannon powder in a dog house well away from the house.