CD:
Welcome, so far you're off to the races with a decent looking gun and good cal for coyotes.
Get some mouth calls and learn to blow them too. I blast it out there when the winds blowing hard. Seems to draw them in better, but, wind is a known major problem trying to call dogs in. Work it longer, louder and harder. Then move 1/4mi when no results.
You get them coming in on the run. Have your gun shouldered and ready to fire where you think they'll come from. Once they get to that spot, bark at them, good volume to it, "WOOF" Woof". Be ready to shoot when you bark, they'll lock up so fast you'll wonder how they can stop so quick it works like this:
"WoofBlam!" You have not over 5 seconds before they either come on in and cant' be stopped, or split the scene. It's amazing how that barking deal works. Even if you kill one you can still bark the others to a stop and get another. Two of us nailed three out of four that way once. Each time we'd shoot, then bark, the other/s stopped to look back. Practice it. At first it's one of the hardest things you'll ever do. BUT: its one of the most productive things too.
IF you're into fur's, use 40gr as it won't exit and blow the fur up. A 45 gr and 55gr will blow big ugly holes out the far side and ruin the pelts. This time of year it makes no sense to not keep the furs. Even if you don't want to skin the stinking things, you can find a buyer for fresh kills a lot of places. So get the word out and make yourself a few bucks while having a blast. Get that kid one too!! No more than NEF's cost, it don't make any sense in two guys being on stand with only one gun. Sure as hell you'll have dogs come in on the wrong side and spook while you're tryin to get turned. Even then, bark at 'em and most times' they'll still stop for that five seconds. Dont' hesitate, be ready when you bark is he main thing. Shots of 50-100yds are best.
When it come's to getting the .223's to shooting one hole groups. One of the best tricks I've found is to get a batch of bullets in the weight you want. Have your load already. THen just swap bullets til you find the ONE that is most accurate. You are a reloader, right??
I found on my Sako bolt gun the 40gr V max was by far the most accurate. My loads for .223: 23gr AA2200, which has been out of production a couple yrs now. and 25gr 4895 either brand is the same. That makes just over 3000fps and very accurate. I use the same load for all wts of bullets from 35gr to 55gr. I dont' shoot anything heavier.
Those 35's lose stability beyond 200yds though. So IF your shots will all be less than that, use 'em, they'll be dandy. But, if most of your shots will be over 200yds, use 40gr if you're saving the fur, 55s otherwise. I use lot's of 55's on prairie dogs. They're cheap in quantity.
Wish you well, let's have those pics of the results once you start getting them killed. When calling, run that call about 3-5 min, then shut it off for ten. I like to blow my own calls, that way I can put the 'pain and feeling into the call'. I've had hunting partners say to listen to it almost makes them want to cry in pity for the poor rabbit suffering so much. That's what seems to work for me.
George