Re: Ultimate Long Range Coyote Rifle
I thought about this some today because the question is a dang good one. You are really looking for the best rifle that can shoot fast and flat and still give you the best chance at a 1000 yard coyote. In other words the best all around gun for varmints. I have the fastest shooting wildcats in every caliber in my arsenal and thinking your situation what would I choose. First I looked at every caliber considering noise, recoil, cost to shoot a lot at varmints and a lot of other things. Basically as you go up and down the calibers equal ballistic coefficients max out at about the same velocity no matter which caliber you choose. There are a few in there that can give you a little edge in 6mm, 264 and 338. You don't need a big caliber to kill coyotes and the smaller calibers are the easiest to load for, cheapest to shoot with little recoil and noise. And on average the most accurate. The hot 22 cals I eliminated because not enough BC/velocity ratio for what you need out to a thousand.
After all was considered I narrowed it down to 6mm and 264. Then I looked at the hottest 6mm 's and 264's available. The hottest 264 I have done is the 264 STW. Any bigger and just not much improvement. I think that size case about max's out the 264. It shoots a 140 grain bullet 3435 fps and a 120 BT right at 3700 fps. This would do the trick but you would probably want a brake on it and it would be expensive to reload. I couldn't see shooting this big a gun in your situation.
Then I looked at the hottest 6mm rifles I have ever done. The blown out 30-06 case is about where the 6mm maxes out. I tried the 280 case with the JRS design with no improvement. The 240 gibbs is the fastest 6mm I have ever done that is extremely accurate shooting the 107 matchking over 3500 fps. It is cheap and easy to reload for with little recoil and noise compared to the larger calibers. It has super flat trajectory up close making all those shots easy plus the ability to easily get out to 1000 yards. Mine shoots exceptional groups at 1000 yards with the 107 matchking.
If I were going out in the morning to do what you do I would pick up my 240 Gibbs above all others. It offers the best BC/velocity ratio of anything I looked at that made a sensible low cost easily loaded varmint round.
Predictions are difficult, especially when they involve the future