I run a Wolff #40 in my G date, flawlessy functions all ammo - and I mean all including hollowpoints 105gr through 147gr. But it also did this before I repaced the spring, although I noticed more effort is needed to manually cycle weapon now with new springs.
Also remember, they include an xtra power striker/firing pin spring which help as well. You will notice the extra resistince on lifting the first arm from the breechblock with it installed. It is also far longer then the stocker.
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