The $2.75-$3/10 pack of Rottweil 'Express' non-buffered SG load patterns better then most "premium" US-made loads. The key is Europeans understand "equilibrium" of the load and Americans just use MAX dr.eq.
Why do Federal 'Gold Medal' target loads pattern beautifully? That's because of perfect "equilbrium" between load weight, velocity and quality of components used.