I have to ask: have you shot anything out of your new 2.0 Compact 4.0" with one of the 4.25" barrels from your FS 40's or your original 4.25" 357 SIG?I'm interested because I don't see a problem with an extra length of barrel as long as the lockup is within the raised end (@ the "business end") of the barrel.
Seems to work fine with my 5" Storm Lake 9mm conversion on my FS 4.25" frame.
CHEERS!
Yes Sir, I installed the new 4.25" barrel in the 4" slide before I took it to be shortened. It functioned fine. However, I am a bit OCD on certain things and I didn't like the looks of the extra 1/4 inch sticking out, just personal preference. I didn't shoot it much when the longer barrel was installed but have not noticed any drastic change in POI etc. If you don't mind the look of the extra 1/4 inch there is no need to go to the extra expense of having one shortened, although my Smithy only charged $52.00 for the work...….to each is own.