Well I broke down and bought a new MP in 40 cal ,Yesterday I got to shoot it for the first time and as posted on this site the 165 grain shot low and the 180 grain shot to the center on the target. I did experience alot of miss feeds with the 165 grain PMC loads ,while the 180's fed with no problem. I like the feel of the gun ,which is why I bought it ,but the failure to feed the 165's took me back some. Do you reloaders find one powder better than another in this cal. ?I'll probably stick with 180 Grain bullets. And another question ,what are you guys using on your slide rails for lube. The manual calls for gun oil ,is there something better? As you can probably tell this is the first auto pistol I've bought,though I shoot my revolvers alot. The failure to fully feed the lighter bullets has me alittle spooked right now. Thanks for any info ---1Longbow