I recently bought a new Glock 22, its my first gun. Its a real beauty nice to look at and nice to shoot. But I have a problem that bugs me,I use Armscore 180 grain .40 SW bullet, everytime I shoot it a little bulge can be seen at the lower half of the bullet casings, is it normal? I know the manual says we can not use reloads but realisticaly can I use reloads and can I use the casing I ,mention above? My brother have a glock 17 2nd gen I know for a fact he has no problem with his casings and he often use reloads with no problems.