With 1.060\” OAL, I could pass the plunk test in my Glock 17/19 Gen 4 barrels, but had to go down to 1.048\” in order to pass in my Glock 48.
I use 5.1 gr CFE Pistol for a good range load, mixed brass with a WSP primer.
I have ran them all of the way up to 5.5gr @ 1200 fps out of my Glock 17, but that was a very hot load and would not recommend going that high, it was definitely the upper bounds with a seating depth of 1.048\”.