Recently bought a lot of powder and primers from a widow.I know the guy was a safe reloader(a friend of one of my closest shooting buddy).But I got puzzled when I came in onto a can full of C300 powder.Up to now,I've found only 1 reference to it,stating that it was manufactured here in Canada(Québec)and that the burning rate was somewhere between Red and Green Dot.
Since I like to have criss cross reference and I thrust the old names who are posting here,I'd like to know if anybody here knows anything about that C300.

From what I understand it is almost exactly the same as 700x
I use the same reloading data as 700x in my 12 gauge and works real good. Also use it in 357 pistols for target practice.

I have a sealed 10lb keg for sale if anyone is interested.

I had heard somewhere it was made for the army for use in land mines during the war.

Thanks Gord.
I've used it in my Blackhawk in .45 Colt with a conservative approach.I used Red Dot data(same as Bullseye,700X and all those quick burning powders) and had a very satisfactory result.Actually I regret not having anymore of it as it was accurate and clean burning(metered easy too).
Well,I guess I'll start chasing widow's garage sales!