I have a FA97 22/22mag. 7.5'' barrel.Wih a Bushnell 2x6 on it.
If your going to put a scope on it, I would go with the 7.5''
I feel the longer barrel helps with the 22mag. I get 1800fps with 30gr. Tnt and Fed.30gr. Sierras.The 34gr. WW Supreme and Rem.33gr.V-Max go 1700+.
I'll probably use the WW Supreme,they average about an 1-1/4''@ 50yds
The 22lr cylinder does well with almost any ammo.Run of the mill bulk 22lr-hp ammo, will usually stay inside 1.75''@50yds. Your better match ammo will stay inside of an inch. This cylinder is the standard one, not the match chambering.
NQuintel