Re: Best cal.
My favorite is the .22 LR but I'd be willing to try .22 Longs if I could find them. I sold my .22 Magnum pistols because the price of the ammo is way more than regular .22.
I did see some .22 Shorts at Gander Mountain but it's been years since I've seen a .22 long for sale.
The .22LR solid point is fine for most small game hunting but I occasionally buy hollow points if the price is right. I'm mostly shooting targets these days so I'm not concerned with ruining squirrel meat.
Recently picked up three 550 value packs of Federal copper coated .22 HP's at Wal-Mart for $13 and change per box.