I live on the iowa borderYour thinking like I'm thinking. I have just the "road" gun. 58 grain VMaxes at 3800fps take a lot of the guesswork out of leading them when on the go. Some guys around here use the longer .224 bullets in their short barreled AR15s. They have twice the lead and sure shoot a lot of bullets to get one on the ground. My new Howa will be my "bed" gun and I want to set it up accordingly.
I don't know what part of the country you hunt but in Iowa I can sometimes glass them laying out in the open from a mile away. I like to sneak up on them and roll them out of their nest. If I can't get where I am shooting into the wind and have to shoot with a cross wind then I have to get within a 300 yards and preferably 200 or that 58 grain pill wanders something awful.
I have been shooting coyotes for 40 years and a lot has change in that time. But ballistics and physics do not. If you are keeping or selling the fur I would suggest using smaller high expansion bullets to limit exit wound size. Now that being said speed also enters the equation as it pertains to distance how long are your shots. if you live in the Dakotas, Montana, and Wyoming pretty good chance you will have longer shots use a bullet with a high B.C. will fly a bit better in the wind with less drift. But that's half the fun is getting to know your bullets abilities in the wind best to set aside some range time in the wind and shoot, experience is the key here. I normally shoot 50-55gr vmax out of a number of .223 cal guns and found to have great success with little or no exit wounds which helps fur price. Also I have found with a 200yrd zero and knowing wind drift tables usually in the 10-20mph range will allow you to do most of your work. I see so very few coyotes on the plains in winds exceeding that. Although there might be some, I find days like that better for reloading and call stand planning produces more coyotes on another day with a better controlled environment. I agree with jdg300rum an 87gr vmax will reach out do the job just don't plan on any" fur money " most buyers like to buy pelts without the "Swiss cheese" effect. I have used a 243, 25-06, 22-250 over the years all do a great job killing the coyotes but for the money I pretty much use 55 gr vmax in a .223 AR15 platform. I have had great success last ten years calling em' in at night in multiples and getting more shots on target usually inside of 200 yards had fun saw a lot of dogs made a bunch of money doing it. Go read my story Here last years Jan edition "Mooning coyotes on the night shift" I just got back today from a weekend trip saw very few dogs during the day, terrible luck on call stands in the day light no snow here lots of wind 20-30 mph. Then I went out Sunday night and had 7 dogs come in on first three call stands better results than the previous three days combined. Just have fun use big long bullets for long range and if your not keeping he hides, use smaller light weight bullets and speed them up so they come apart inside the coyote so no exit wounds and get good and knowing your wind drift holds.I'm shooting a savage predator. 243 and was wondering which load yall prefer? I handload an have been using 55 grain nosler which are deadly. But was wondering if that's the best for shooting them from under 100 yards to over 600. In Oklahoma we could be 60 degrees one day with no wind and 20 the next with 20 mph winds. So would like to use the deadliest flatest and best for just in case I get in a 20 mph windest bullet. Lol.. Thanks for any help or recommendations...
Also shot at a couple with my AR-.223 in a cross 20 mph wind and was shocked on how much drift it had at 200 yards..shooting a 55 grain in it also..guess I need to hold accordingly in that kinda wind. Just didn't reaize they drifted that much.
I put some ballistics in a calculator and it didn't seem like it matter much going from a 55 grain to like a 70 or even a 90 grain..