Callister finished with a best score of 85.25 in the Final, which he scored on his second run.
Teammate Nate Johnstone, after also qualifying for the ten man final, finished tenth, after falling in each of his three runs.
Scotty James finished 24th in qualifying, after falling in both his qualifying runs.
In the Women's Halfpipe, Holly Crawford just missed out on a spot in the Final after finishing eighth, with only the top six progressing to the final.
Crawford fell just 7.75 points short of qualifying for the final.