First trip to the range for some quick break-in firing of the M&P. The first shot with the Remington Disintegrators produced a dead-center "X", which I took as a good omen, since the rest of the rounds printed the way I usually do when working-in a new handgun.
Still, the M&P impressed me enough to swap out all the Gen1 internal parts with Apex Tactical upgrades. The current generation M&Ps have much better triggers, so this should let me pretty much pull even. Not really bad right now, but if I can do better, I will. This will join my special group of trusted and proven SHTF weapons.
Speer 125gr FMJs shot well, with just a bit of muzzle jump, a straight push back, and no "slap" to the palm of my hand when I shoot to much of a round in too little of a weapon. My wrist gets a little sore about round 49 when I shoot .45ACP, which I consider an easier round for me to handle compared to the occasional 9mm or .40S&W.
The Remingtons are almost supernatural. At 100gr, NO muzzle flash (a good trick on a .357SiG) and just some gentle recoil. Very impressive performance for something that's basically a flying grenade. The salesman took a few shots with it when I offered it to him. We both noticed the muzzle blast move paper scrap from targets to about 20 yards downrange. But except for one or two tiny muzzle flashes about the size of an orange, we watched from behind and to the side of the gun, and didn't see any. Considering some of my brands of .357 SiG puts out a fireball that blinds two firing points on both sides of me, this is impressive performance.
As soon as I got home, I ordered another 500 rounds online. The next day, I noticed their entire listing for the Remington Disintegrators had vanished. Aaaaannnnddd, I ordered an aftermarket barrel in .357 for my FNX-40, since FNH abandoned that round years ago, too.
I feel like I'm doing my part to preserve the ammunition Of the Sig, By the Sig, and For the Sig from vanishing from the face of the Earth. :)