I have reloaded many thousands of rounds of .40 for Gen 2/3/4 Glocks and never have seen the widely touted case bulge. I size with a regular sizing die, no need for bulge buster dies. I also reload thousands of 9mm and .45 for Glocks and see no difference between the cartridges or ones fired in non-Glocks. I have had reloading buddies who competed with .40 Glocks who reloaded thousands per week and also never had a problem with cases.
Not saying it never happens to others but the case bulge and weakening is not a given, I think only under some circumstances.
I reload .40 cases like all my other handgun calibers: reload until case cracks at neck or shows sign of starting to split. These are normal case wear failures and not catastrophic by any means. I do not see a need to count times reloaded for any handgun case. I do tend to stay with mid-range loads like I do for all other calibers, and never over book maximum. Pushing max pressures all the time with any cartridge has to be harder on the gun and greatly reduces the margin of error from so many combined factors.
It is in vain, sir, to extenuate the matter. Gentlemen may cry, Peace, Peace but there is no peace. The war is actually begun! ... Is life so dear, or peace so sweet, as to be purchased at the price of chains and slavery? Forbid it, Almighty God! I know not what course others may take; but as for me, give me liberty or give me death!" - Patrick Henry in an address at St. John’s Church, Richmond, Virginia, on March 23, 1775.
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