In Cartridges of the world 9th edition, it has load data for the 300 Canadian magnum( imperial mag) It was developed about 1989 by Aubrey White(Nass Shooting Systems) The data contains max load data for 165 to 200 grain bullets.I ran a .338 imperial mag for a few years, and as Elk Hunter said, the brass was very soft.I talked directly to Aubrey and at that time, he had tons of brass for everything.Send me a pm if you want data
NW
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