Good morning and Happy Thanksgiving. Well it is official, we have coyotes in the area. The game warden said this morning that they think that the yokes are here for good (they have been tracking them in the area for several years but hoped they were passing through), which means that they will need to be exterminated for the sake of the livestock on the farm (they have already killed several calves in the last two weeks). My question is what is the most effective calibur for coyotes and varmits of that size? I was thinking of a .243 since I do not have many shots over 300 yards. All make, model, and calibur suggestions are greatly appreciated.