Yes, I'd call 180 the top end for the 40 S&W. Heavier will be moving too slow for good wounding effect. Weights down to 160 are real good too, because of their higher velocity potential. I recommend my WFN for the 40 autos. Have sold quite a few and haven't had one feeding complaint, while all love the accuracy, yet it is blunt enough to hit like a big hammer when it gets to the target.