I have a 6.5 creedmoor with a 20 inch heavy barrel (.936 gas block) with a .093 gas port, and roughly 6.8 inches from the end of the barrel, but it will not cycle right. It barely ejects the casing when it does, most of the time it stove pipes them. With the heavier barrel do i need a larger gas port? Or an adjustable gas block? I’ve tried 3 different types of ammo and none run better than the other.