Overkill?
Maybe with target/plinking ammo.
Are you running full power 10mm loads with the 20 lb springs B?
If so, please elaborate.
11 grains of Blue Dot behind various 180. Some of my brass is on it's 10th loading and my gun has nearly 10k rounds with no signs of damage. I have every spring weight available from Wolf fr my Glock 20s and I found the 20 to be perfect. YMMV of course.
