25 yard group after 11.5lbs spring and extended firing pin install

[Shooter]

5 shot group was fired at 25 yards kneeling with my cz75b after I installed a cz extended firing pin with cgw 11.5 lb main spring. My water wieght test ended up with 7 cups tap water.  The math I used was 8.32  oz per cup.
Before 10 cups = 5.46 lbs
AFTER 7 cups = 3.6lbs
Aproximately 1000 rnds before so trigger was already broke in. So far only 50 rounds tested zero failures and safety check looks good no extruding firing pin at breech with hammer down and no firing pin mark on rounds going into chamber. More testing to do but I am very pleased with results so far.  Also added cgw reduced firing pin block spring.