BC seems to be among the few places that allows rimfire for turkey hunting. And for sniping them in fields, it's a good tool. But I can't recommend a .22 or .17 for turkey or grouse hunting. Lots of guys say they take head shots and either kill or miss. I say they are being naive. There are undoubtedly lots of birds wounded by rifle bullets... just nicked, or the beak shot off, or leg, or whatever. I've seen it, and I encourage the use of a shotgun for these birds... plus, you don't have to put the gun down when the bird takes off! And a shotgun is infinitely better is brushy situations..
Admittedly, I did shoot my first turkey with a .22. My scoped rifle was sighted in at 75 yards.... and when the bird quickly closed to 15 yards I shot right over its head with my first attempt!