Note that factory ammo would run fine through a perfectly clean chamber, but once they started FTExtract, running one of my 10.1gr H110 handloads (SPP) through would allow at least another 5 factory rounds to cycle perfectly. Running 1 of my handloads and then 5-10 more factory loads would work perfectly every time we tried. About 1 in 10 factory primers show severe cratering and about 1 in every 25 show such severe over-pressure that the cratered primer actually flowed and leveled back out again (shiny, flat ring around firing pin strike location).
These factory rounds were chrono'd at 1913 FPS through my 1911 MS.
My 10.1gr H110 (SPP) load chrono'd at 1710 FPS through my 1911 MS.
The same handload with SRP chrono'd at 1756 FPS.
My handloads ran perfectly with no FTExtract, FYI.
Give SPP a try in your handloads and see if they work.
Striker-fired guns, at least in my experience, don't hit the primer as hard as hammer-fired guns. When I got my progressive press (dedicated to one 40 S&W recipe), I didn't have any FTFire in any hammer fired gun, but my striker-fired X-Dm would FTFire due to high primers regularly.
I did try cleaning the chamber, but it made no difference, and wasn't really that dirty anyway.
I do really think the factory stuff might be over pressure, at least the brass cased stuff I got, the primers do look pretty gnarly.
I left some posts on here about my testing of small pistol versus small rifle primers in a only somewhat related thread. The thread asked about the difference and I posted a bunch of data that I had collected.
IIRC, small rifle primers were around 50 FPS faster and had about 1/2 the extreme spread of pistol primers, but never had any problems with pistol primers.
RIA is crap as far as CS goes.
I also cast up 500 little boolits over the weekend to work up some more loads. Gotta coat them, and then I'll be in business.