I am working on a Crosman/P-Rod PCP carbine. The gun uses Benjamin marauder pistol grip frame and trigger group, P-Rod air reservoir and valve, custom hammer, Custom 2240 AR stock conversion kit, custom breech for 2240 and 14.5 inch barrel that fits the 1322 and 2240. (Also The gun is tuned to around 850 FPS, and is consistent) I was testing the gun out at 10 yards and with the Crosman premier 14.3 grain domes, and a five shot group is about the size of a penny so at longer-range I don’t think it will be the greatest. I was just wondering if anybody else has the 14.5 inch barrel for the Crosman 2240 and 1322 and found what pellets those barrels like. Thank you very much! 
