OK, so I've had a run of copperheads lately. Most of the time I can get to them with a hoe or shovel, but other times (depending on the size and number of snakes) I need to shoot them, and I've been using 38 Special buckshot hand loads. They have worked good, but sometimes it'll do some damage to barn wood etc... This got me thinking about the best type of ammo for shooting snakes without causing collateral damage to barns, trees, etc... I'm thinking maybe .22 bird shot, but I don't know if its enough for large copperheads. Any comments or suggestions for the task?