On the 4th Saturday of each month, Riverbend Gun Club near Dawsonville (also near Canton, and near Cumming) has a 100-yard 3-position match that's suitable for rimfire rifles.
It's iron sights only. No scopes allowed.
20 rounds standing / offhand (unsupported)
20 rounds sitting (with sling).
20 rounds prone (with TIGHT sling).
If you can hold a 5" group with 10 shots from the sitting and prone positions, you'll do well in this match. If you can do an 8" group from the standing position, that's great. You'll be right up there near the top for scoring.
This isn't just a "match." It's half match, and half TRAINING CLINIC, with plenty of instruction from master highpower rifle shooters who are excellent coaches and teachers.