Just got some Barnes TAC-XP .451" 160gr bullets to load up in .45 ACP, and I cant find any load data using Power Pistol for these bullets. I'm thinking that the 'coppers' are comprable in length as 185 gr JHP bullets, so would a starting load of 7.5grs of PP be too much? I contacted Barnes, and they havent even thought of a load using the 160 gr bullets in the 45 ACP, even though Corbon does use it in one of their loadings, "Compact Gun Load" I think is what they call it. Thanks ahead of time guys... Rock on! Brad L.