I recently installed a Wollf's main spring Type 2 in my SW66. I have noticed my trigger being slightly lighter, but not a whole lot. In fact the difference was so slight that I actually put an original spring back, did some dry firing and then installed Wollf's again just to compare and make sure there is a difference. Yes, there is, but just a tiny bit.
However range results proved that the difference is more than "just a tiny bit". My groupings in DA became significantly tighter and aiming for followup shots is easier too. So far I put about 300 rounds of different ammo through the gun with this spring and only had one misfire. But even that round went to the target on the second try.
I highly recommend this spring for target shooting, at least on K-frame revolvers for sure.
However range results proved that the difference is more than "just a tiny bit". My groupings in DA became significantly tighter and aiming for followup shots is easier too. So far I put about 300 rounds of different ammo through the gun with this spring and only had one misfire. But even that round went to the target on the second try.
I highly recommend this spring for target shooting, at least on K-frame revolvers for sure.