So, a little background first. I grew up in NE which has a caliber restriction for big game. Rifles must be .24 or lager caliber. NY does not have this restriction, a rifle for big game only has to be centerfire. My 7mm Rem Mag will possibly be down for maintenance this coming season which limits me to a .243 and my new .223. I got the .223 for coyotes, it's the Gandermountain Rem 700 package deal. If my wife hunts this year one of us will have to use the .223 or a muzzle loader. My muzzle loaders are all traditional style flint locks or percussion caps and if there in bad weather this will not be the best option.
So, with that, the .223 is a 1/12 twist, which won't handle heavier rounds well. Since I'm new to the whole concept of using a .223 on deer, is there a round that my rifle will handle that will also kill deer? Would a predator round be enough on a deer? Would range be a factor? The average range for where we will be hunting is 100 yds, maybe 200 max, so I don't think the round would suffer in that range.