Since I purchased my M&P, my gun hass been cleaned three times. Once before using, as an act of common decency when sending it to Dan fro a trigger job and sights, and last night. The mags haven't been cleaned in closer to 5000 rounds. They got cleaned up as well.
The gun was still running like a top, and probably would have continued on happily for many more thousands of rounds. But man was it a mess in there.
On the positive side, the mags did not have a lot of carbon buildup despite the gobs of carbon buildup in the gun itself. Carbon buildup on the mags is what i find usually starts causing magazine related failures to feed. They also continued to function just fine with all sorts of fine sand, dust, and brass shavings in them. The gun seems pretty well designed to shove excess gunk to someplace it won't get in the way.
On the negative side, loading minor power facto .40 with titegroup and plated bullets seems to cause some of leading. If you ever shot titegroup at lower pressures, you know that you tend to get a scorch mark down one side of your brass. Oddly enough, the groove that lines up with this scorch mark was pretty severely leaded, but only at the end of the barrel. About the last 20-25%.
Might explain why no matter how much I play with crimp and OAL, I can't make a major power factor round using 180gr plated bullets using titegroup that groups better than about a random 10 inch spread at 30 yards.
The gun was still running like a top, and probably would have continued on happily for many more thousands of rounds. But man was it a mess in there.
On the positive side, the mags did not have a lot of carbon buildup despite the gobs of carbon buildup in the gun itself. Carbon buildup on the mags is what i find usually starts causing magazine related failures to feed. They also continued to function just fine with all sorts of fine sand, dust, and brass shavings in them. The gun seems pretty well designed to shove excess gunk to someplace it won't get in the way.
On the negative side, loading minor power facto .40 with titegroup and plated bullets seems to cause some of leading. If you ever shot titegroup at lower pressures, you know that you tend to get a scorch mark down one side of your brass. Oddly enough, the groove that lines up with this scorch mark was pretty severely leaded, but only at the end of the barrel. About the last 20-25%.
Might explain why no matter how much I play with crimp and OAL, I can't make a major power factor round using 180gr plated bullets using titegroup that groups better than about a random 10 inch spread at 30 yards.
