Well after loading up all my 43 spanish brass for a shoot tomorrow. I have came to the conclusion that my roller needs a more practical chambering. So was looking around the net and am having NO luck finding a barrel blank! Looking for a 45 Cal (going 45-70) for a finished length of 32 inches. Octagon or a round barrel, figured I'd at least find a round one? Nope! Green mountain shows both but unavailable!! Any place I can look???? Action is a #1 Argentine military.