Probably going to get some flack about this being the wrong category for this question, but here goes anyway. I load my own stuff so it is pretty much tailored to the specific rifle. I am looking at a new Remington Model Seven in .243 Winchester with a 20" barrel. Is it fair to say that I will lose about 50 fps per inch of barrel from published velocity? And if that is the case does that reduction negate the use of a .243 versus a .223 for coyotes? I know many prefer the .243 for dogs and others the .223 but I like the larger diameter. What say you?