LMAO @ supported and unsupported theories. I'll touch back on this later on. But im pretty positive people are blowing this way out of proportion. As we've seen people do this same thing in the past and come up with this same theory of theirs.
Chamber support varies between all weapons and manufacturers. Actually it can vary from particular machines on the assembly line also.
IMO, these guys need to look at brand of ammo (cheap ammo or quality ammo). Then they need to look at figuring out if these weapons have anything in common. Production dates, possibly even the same machine stamps on the slide. I dunno what the slide would do with chamber support. But the slides surely cant be the only thing they keep track of on the assembly line. I'd be willing to bet there is something they are over looking.
PS: The above pic of the FS 40 is not fully supported. Notice its only supported up to the groove (or where the extractor meets) Fully supported chambers come all the way up to around the rim of the case (such as a revolver). The unsupport u guys are calling on the Shield is caused by the feed ramp cuts. Which in return also causes the weapon to feed more reliably. Notice the pic of the FS does not have the same feed ramp as that of the Shield. The ramp of the FS has a much smaller smaller degree of incline than that of the Sheild. These feed ramp cuts were never an issue until pressures started climbing in factory loads.
