ORIGINAL: JeramyK
The 125s will change your FOC, cause a loss of a few FPS but a gain in KE. If I remember correctly. I'm sure someone will correct me if I'm wrong. [8D]
Slightly wrong, the loss in speed because of the gain in weight will offset each other and the KE will remain the same but it's irrelevant.
The gain in FOC is the greater reward and the difference in 25 grains is insignificant...yoru point of impact will remain within an inch or so...a slight adjustment and your good to go.