I think most who want to are fighting colder temps. This is out there, one guy, one rifle:
I shot some at 400 with 2 rifles, were 2 of us shooting side by side, same conditions, my Vudoo did well enough to pursue the ammo at the 11 buck range that I paid for it.
My 13tw Rim X did not fare well with it. Both rifles have tuners on them.
At the 20 and 25 dollar price points I have seen it listed for, neither rifle shot well enough to buy more than the 4 bricks I did buy.