OhMyGod! $12 for 25 bullets!
Yes, you need to reload.
I am trying to understand the issue here: when the rounds are completed, there is a bulge in the case where the bullet is seated? Does the bulge mimic the outline of the bullet? If so, and if the case was properly re-sized in the beginning of reloading, I would say the bullets are out of specification. Maybe.
If the bulge is towards the bottom of the case, they are not re-sizing properly. Lee makes a die that removes the bulge from firing .40S&W/10mm rounds in a pistol with an unsupported chamber, such as a Glock. It is called the "Bulge Buster".
Can you post a picture?
Having said that, the other popular and reliable brands for reloading are RCBS, Dillon, and Hornady, in that order (my opinion). I use a Lee "Bulge Buster" on my .40S&W reloads, and the die fits my RCBS reloader.