How far will my sights be off with a 357 sig barrel in a G20?

[DNS]

I was thinking about getting a 357sig conversion barrel for my G20. However I have the fixed site model. How far off will my sites be with the 357 sig barrel? Thanks

[BigFatDog]

I am also considering a 357Sig conversion barrel. I was wondering if anyone has done this and what thier experiences were.

[G33]

I got adj. sights on my G20 for this purpose.
Never needed them.
YMMV
:)

[4eyes]

Within a couple inches at 25 yards. My G20 shot high from the factory and I replaced the standard high rear with the standard lower rear that comes on the G17, 22. Now shoots to POA at 25 yards.