hawkeye - gonna go with Lloyd on this one. I have a full size Springer and an older Colt lightweight Commander (4"). Side by side the weight difference is noticeable but when in use the recoil really isn't.
If you want to stand there and take a target hold and all that, you will notice the difference. But in more realistic practice, when you pull down on the target you really don't feel the difference at all.
Some folk, me included, trick out the pistol with a set of heavier springs from Wolff Springs in Pa. Both my 45s carry a 22 lb recoil spring kit, and it helps. JMHO. Mikey.