I load up my 40 (G22)
Just stay away from hot loading your ammo!
The case WILL rupture.
Go with an after market barrel with full case support
and you'll be good to go.
Cheers
tacdriver
Reloading the 40S&W cartridge is easy.
If you wish to shoot mostly lead, buy a Lone Wolf Dist. aftermarket barrel with conventional lands and grooves. Shooting lead in factory Glock barrels is not recommended and voids the warranty.