"Trying to get the 356 velocity up to 358 levels"
Mark: I hope your not attempting to do that in a 356 Win 94 Big Bore. Despite the thicker receiver rails in the Big Bore it will not take the pressures a bolt action 358 will due to the rear looking bolt. I had good luck with AA 2520. Too bad Alaska Bullet Works went out of business. The proprietor was a great guy.