I have a really neat lube cookie I made up for the gun. It has about a 1/16" paraffin layer on the bottom and About a 3/8" lube on top of it. The gun should be swimming in lube. Its just extremely tight. It is suppose to be .451 and this bore measures .448. I am not to worried about hunting with the gun I can always use the regular grease groove bullets for that. Besides they do have the edge in accuracy. I may have to fire lap the bore and open it up about a .0005. The sides on the Hexagon are straight so it should not hurt anything.