I do 10.5g of accurate no 7 with 121g campro @ 1.255. Or 9.6g of 3N38 with the same bullets @ 1.255. PF is in the 171-175 range for both. My barrel is also trubor but with only 2 holes... I find accurate no 7 softer, dirtyer and the 3N38 has more flash and bang but cleaner.