What is the big deal reloading for glocks

[Rocky Raab]

Mike, almost all gun makers say to use factory ammo only in their guns. It's hard to blame them, with the propensity for some people to sue manufacturers for something they themselves dorked up...

However, the Glock DOES have a problem with reloads due to the design of the feedramp/chamber. In certain calibers (most notably the .40 S&W and to a lesser extent the .45 ACP) the design leaves a small protion of the cartridge wall unsupported.

That's not a huge problem with ammo that's never been fired (factory stuff) but is a huge problem with reloads. Why? Because the first firing bulges the case wall at that unsupported point. Resizing cannot iron out that bulge because it happens right at the point that's covered by the shellholder lip.

If that weakened case is fired again, it can let go. Many have, especially in .40 S&W. It's a catastrophic failure, usually wrecking the gun and often the holding hand.

The only two alternatives for owners of .40 S&W or .45 ACP Glocks is to use factory ammo only or to replace the original barrel with an aftermarket one that does support the whole chamber. Of course, replacing the barrel voids the Glock warranty.