The only actions spaced to 3.44 were the Palma, (basically a PTA right bolt ,right port) and the benchrest dual port. However... there are some *******ized actions floating around. You might find a dual port action in the 4.4 and left ports in the 3.44. I have gotten them both ways, and most of the time they came with the wrong trigger guard. I've had a few customers that have run into problems when they received their actions and found that it wasn't the same as the stock they ordered.....so be sure to measure.