I spent the winter shooting indoor .22 bullseye and just got back from my first class of the season yesterday. I was amazed at how much more accurate I was during the class. I shoot the bullseye course with a couple of the instructors, and even then, they kept commenting on how well I was shooting (and ended up pushing up my speed as a result). So dry practice and even shooting target .22's had a HUGE impact for me.
The close-in work is already paying off. 2 weeks ago I was thowing shots all over the paper at dot targets at 3yds, today I was keeping most of my shots in 2" circle targets at 5-6 and finished off the session with 10 to a 3x5 at 7yds.
Dropped two of those shots by about an inch, but it feels great to finally be getting back into the groove of things after having had my shooting degrade so badly due to the time off.
And now I need to order more ammo. This is a problem I like having.