hi mate, the ruger 10/22 is a great gun. I use the same gun for rabbit shooting. Not sure what ammo you planning on using but avoid winchester subsonic 40gr ammo. They are not suitable for the semi auto ruger rifle. I started using them and found they kept jamming in the gun, so went to see an expert on these guns and he reccomended the cci subsonic 40gr. since then i have put several hundred of these rounds through my gun with out a single jam. they are minutely shorter than the winchester version. As fot the magazine, Wilson fieldsports in laundry road Manston,Thanet stock the 25 shot magazi