Yeah, Thats what I was told too, but it appears it was historically a standard practice to pour directly out of the flask, as this flask indicates? When I began my M-L adventures in the '70s there was, on the market, an adjustable measure that would screw in to a pistol flask,,,NEAT I thought. So I ordered one from TOTW and promptly screwed it to my flask. Set the charger at 80 grains and a hunt'n I went!!!!, Squirrels, rabbits , birds all fell to my M_loader and i could quickly and efficiently reload with that measure on the flask!!! I even used it with my Cee VEE Aye mountain rifle on several timed events!! It wasn't till several years later that someone suggested to me the possibility an ember igniting flask! HMMM never thought of that!! I have refined my loading techniques since then. This antique flask surely indicates that loading from the flask was an accepted procedure,,,,maybe they just were more fearless than us,,,or just plain LUCKY,,,,as I was!!!???....Ed