Oh it can better the 223 because i carries more powder and a 20 cal bullet of the right selection has a higher BC at a lighter weight. 22-250 in a faster twist will compensate and better the 204 with its higher powder capacity , .22 creedmore much better at the price of a fast burned out barrel . Its all a balancing act on what you want and what you can sacrifice . With anything 20 you cant use it for Muntjac , CWD in England .Had both 204 and 22-250 ,maybe on paper but in the real world not a hope ,the 204 in my experience offers very little over a 223, in fact I'd rather a fast twist 223 over the 204,my 1 in 8 223 will shoot anything from 40grn to 75 happily
My take is to say at 300, its always the man behind the trigger
, I had a knacked XR 4x4