I don't know from personal experience...however, it should burn OK...probably be more fouling than you're used to...and if you think its too coarse, you can break it down smaller.
For Example...if somebody has some 3F and wanted some 4F size kernels to use for priming, an old trick is to fill a 35mm film canister half full of powder, drop in a lead ball, hold the cap on tight and shake it vigorously for 15-20 seconds.
To handle a larger amount of powder like a full can, you'd probably want to use an approach that processed a larger amount of powder each time than what could be done inside a little 35mm canister.
I won't "tell you to do this"...but I'll tell you what I would do...I'd find a flat smooth dry section of concrete and using a wooden baseball bat, broom handle, rolling pin, etc...I'd spread out a coffee cup amount at a time into a thin layer and roll over it a couple passes...a quick glance would tell me how its size is reducing down. Outdoors would be best, I'd make sure there was no possible extraneous ignition source nearby, etc.
Alternativly...you might have some reenactors in your area who might use it for blanks in their muskets or cannons...maybe you could trade it for 2F or 3F.
