Not all hunters want to take on a moose or need to defend themselves against bears. Some people only purchase rifles to keep varmints and smaller predators away from their property. This is where the .224 caliber barrel comes in. In situations where larger kinds would be too overpowered to be effective, these excellent rifle calibers help shooters hit their mark every time. For these purposes, manufacturers like Krieger and Bartlein design .224 caliber barrels like the Remington Varmint and Heavy Palma. You can find them below, courtesy of OTM Tactical.