Some of us are tightwads and like to buy secondhand. But I can tell you Gunwerks produces a package that may not be 1/4MOA accurate, but is definitely in the 1/2 to 3/4 MOA area to 1000yds. with their ammo. Here is an example:
BTW, having shot this same rifle myself - I know it is capable of what Ryan says.
Gunwerks Magnus Rifle Review - Long Range Only
Gunwerks Magnus Rifle System review by Ryan Furman. Ryan takes the Gunwerks Magnus to 800 yards right out of the box in Kansas.
www.longrangeonly.com