Originally Posted by hq357
Supported in what?
the base of the case which the part just ahead of the rim. stock glocks do not fully support the 45acp base. most autoloaders just leave the portion where the the case curves in then out to for the rim unsupported. the glock barrel leaves a large portion of the case body exposed.
the xdm fully supports the case. the reason glock leaves that gap is to increase reliability. the side effect is it can lead to kabooms when the pressure goes up for any reason.
this is also what most "throat jobs" do which is why i dont have that done to any gun.