I'm not a big fan of the XTP, but it worked in the .25ACP. We shot a bunch of these into wet newspaper. Gold Dot, Winchester XP, CCI Blazer JHP, and XTP. The XTP was the only one that opened reliably. The others were inconsistant, except for the Blazer. It never opened under any conditions. The Magsafe and Glaser we tried worked as designed, but the peices were too small to recover. My quality .25s (IE Berettas) have XTP's.