Then grabbed a 2 pin 3 and a Gen 4 to test and none would fully chamber. I grabbed the old take off barrel and made a few dummies which passed plunk test. When I started back reloading I also started casting and picked up a 135gr SWC mold from MP Molds which I had to figure out seating depth on my own. I picked up a G19 new take off barrel(think they were Simunition or other trainer conversions) in 1998 or 1999 so likely a single pin Gen 3. I hand loaded from about 1995 till 2005, then didn't start back on rifle till 2019 and pistol summer of 2020.ĩ5-05 I was loading for Gen 2 and single pin Gen 3 and never really had an issue once I figured out combo seater taper crimps and zero issues after getting Lee carbide factory crimp dies.Ī buddy got in to loading a few years after I did and quite several of his first loads had crimping that would not completely chamber in his USP, but did fine in my Gen 2 Glocks. Got to thinking and I do think Glock 9mm chambers were cut a little looser years back, but not by a lot. 40 was so loose in it I could see how there could have been issues sizing it. 40 chamber claims I was looking at someone else's Gen 2 or early 3 22 or 23 and a factory. 40 anything, but after seeing loose Glock. When I was really seeing mentions of that(along with pictures) was on a Glock email list back in the 1990's so it was mostly Gen 2 pistols. 40cal Glocks (I have eight of them), and never seen a bulged case. I've fired and reloaded tens of thousands (10,000s) of rounds for.