My Bushmaster Varminter 24" barrel has a 1:9 twist. It'll handle .223 and 5.56 ammo. I'm looking at buying some ammo in bulk for it. I plan on doing some general plinking and some coyote hunting with this rifle. I'm also a former competition target shooter, so I don't have much patience with rifles or loads that are less accurate than I am. What's a good brand/type/bullet weight combination for this rifle?